Form990-PF

Department of the Treasury
Internal Revenue Service

Return of Private Foundation
or Section 4947(a)(1) Trust Treated as Private Foundation
right arrowDo not enter social security numbers on this form as it may be made public.
right arrowGo to www.irs.gov/Form990PF for instructions and the latest information.
OMB No. 1545-0047
2024
Open to Public Inspection
For calendar year 2024, or tax year beginning 01-01-2024 , and ending 12-31-2024
Name of foundation
POPPLESTONE FOUNDATION
C/O SULLIVAN & WORCESTER LLP
Number and street (or P.O. box number if mail is not delivered to street address)ONE POST OFFICE SQUARE
  Room/suite
City or town, state or province, country, and ZIP or foreign postal code
BOSTON, MA02109
A Employer identification number

04-3528004
B Telephone number (see instructions)

(617) 338-2839
C right arrow
G Check all that apply:

D 1. Foreign organizations, check here............. right arrow
2. Foreign organizations meeting the 85%
test, check here and attach computation ... right arrow
E right arrow
H Check type of organization:
F right arrow
I Fair market value of all assets at end
of year (from Part II, col. (c),
line 16)right arrow$18,463,724J Accounting method:
 
(Part I, column (d) must be on cash basis.)
Part I Analysis of Revenue and Expenses (The total of amounts in columns (b), (c), and (d) may not necessarily equal the amounts in column (a) (see instructions).) (a) Revenue and
expenses per
books 		(b) Net investment
income 		(c) Adjusted net
income 		(d) Disbursements
for charitable
purposes
(cash basis only)
Revenue 1 Contributions, gifts, grants, etc., received (attach schedule) 6,897,404
2 Check right arrow.............
3 Interest on savings and temporary cash investments      
4 Dividends and interest from securities... 1,545,880 1,545,880  
5a Gross rents............      
b Net rental income or (loss)  
6a Net gain or (loss) from sale of assets not on line 10 -7,275,255
b Gross sales price for all assets on line 6a 2,572,341
7 Capital gain net income (from Part IV, line 2)... 0
8 Net short-term capital gain.........  
9 Income modifications...........  
10a Gross sales less returns and allowances  
b Less: Cost of goods sold....  
c Gross profit or (loss) (attach schedule).....    
11 Other income (attach schedule)....... Click to see attachment
List of Attached Documents:
// Content
28,544 28,544  
12 Total. Add lines 1 through 11........ 1,196,573 1,574,424  
Operating and Administrative Expenses 13 Compensation of officers, directors, trustees, etc. 0 0   0
14 Other employee salaries and wages......        
15 Pension plans, employee benefits.......        
16a Legal fees (attach schedule)......... Click to see attachment
List of Attached Documents:
// Content
35,227 0   35,227
b Accounting fees (attach schedule).......        
c Other professional fees (attach schedule)....        
17 Interest...............        
18 Taxes (attach schedule) (see instructions)... Click to see attachment
List of Attached Documents:
// Content
75,200 0   0
19 Depreciation (attach schedule) and depletion...      
20 Occupancy..............        
21 Travel, conferences, and meetings.......        
22 Printing and publications..........        
23 Other expenses (attach schedule)....... Click to see attachment
List of Attached Documents:
// Content
399,301 133,268   266,033
24 Total operating and administrative expenses.
Add lines 13 through 23.......... 509,728 133,268   301,260
25 Contributions, gifts, grants paid....... 51,278,754 51,278,754
26 Total expenses and disbursements. Add lines 24 and 25 51,788,482 133,268   51,580,014
27 Subtract line 26 from line 12:
a Excess of revenue over expenses and disbursements -50,591,909
b Net investment income (if negative, enter -0-) 1,441,156
c Adjusted net income (if negative, enter -0-)...  
For Paperwork Reduction Act Notice, see instructions.
Cat. No. 11289X Form 990-PF (2024)
Form 990-PF (2024)
Page 2
Part II Balance Sheets Attached schedules and amounts in the description column
should be for end-of-year amounts only. (See instructions.) 		Beginning of year End of year
(a) Book Value (b) Book Value (c) Fair Market Value
Assets 1 Cash—non-interest-bearing.............      
2 Savings and temporary cash investments......... 21,533,777 362,853 362,853
3 Accounts receivable right arrow  
Less: allowance for doubtful accounts right arrow        
4 Pledges receivable right arrow  
Less: allowance for doubtful accounts right arrow        
5 Grants receivable.................      
6 Receivables due from officers, directors, trustees, and other
disqualified persons (attach schedule) (see instructions).....      
7 Other notes and loans receivable (attach schedule) right arrow  
Less: allowance for doubtful accounts right arrow        
8 Inventories for sale or use..............      
9 Prepaid expenses and deferred charges..........      
10a Investments—U.S. and state government obligations (attach schedule) 45,802,343 Click to see attachment
List of Attached Documents:
// Content
26,237,155 		17,128,320
b Investments—corporate stock (attach schedule)....... 9,795,943 0 0
c Investments—corporate bonds (attach schedule).......      
11 Investments—land, buildings, and equipment: basis right arrow  
Less: accumulated depreciation (attach schedule) right arrow        
12 Investments—mortgage loans.............      
13 Investments—other (attach schedule).......... 1,032,406 Click to see attachment
List of Attached Documents:
// Content
972,551 		972,551
14 Land, buildings, and equipment: basis right arrow  
Less: accumulated depreciation (attach schedule) right arrow        
15 Other assets (describe right arrow)      
16 Total assets (to be completed by all filers—see the
instructions. Also, see page 1, item I) 78,164,469 27,572,559 18,463,724
Liabilities 17 Accounts payable and accrued expenses..........    
18 Grants payable.................    
19 Deferred revenue.................    
20 Loans from officers, directors, trustees, and other disqualified persons    
21 Mortgages and other notes payable (attach schedule)......    
22 Other liabilities (describe right arrow)    
23 Total liabilities (add lines 17 through 22)......... 0 0
Net Assets or Fund Balances Foundations that follow FASB ASC 958, check here right arrow
and complete lines 24, 25, 29 and 30.
24 Net assets without donor restrictions...........    
25 Net assets with donor restrictions............    
Foundations that do not follow FASB ASC 958, check here right arrow
and complete lines 26 through 30.
26 Capital stock, trust principal, or current funds........ 0 0
27 Paid-in or capital surplus, or land, bldg., and equipment fund 0 0
28 Retained earnings, accumulated income, endowment, or other funds 78,164,469 27,572,559
29 Total net assets or fund balances (see instructions)..... 78,164,469 27,572,559
30 Total liabilities and net assets/fund balances (see instructions). 78,164,469 27,572,559
Part III
Analysis of Changes in Net Assets or Fund Balances
1
Total net assets or fund balances at beginning of year—Part II, column (a), line 29 (must agree with end-of-year figure reported on prior year’s return) ...............
1
78,164,469
2
Enter amount from Part I, line 27a .....................
2
-50,591,909
3
Other increases not included in line 2 (itemize) right arrow
3
0
4
Add lines 1, 2, and 3 ..........................
4
27,572,560
5
Decreases not included in line 2 (itemize) right arrowClick to see attachment
List of Attached Documents:
// Content
5
1
6
Total net assets or fund balances at end of year (line 4 minus line 5)—Part II, column (b), line 29 .
6
27,572,559
Form 990-PF (2024)
Form 990-PF (2024)
Page 3
Part IV
Capital Gains and Losses for Tax on Investment Income
(a) List and describe the kind(s) of property sold (e.g., real estate,
2-story brick warehouse; or common stock, 200 shs. MLC Co.)		 (b)
How acquired
P—Purchase
D—Donation 		(c)
Date acquired
(mo., day, yr.) 		(d)
Date sold
(mo., day, yr.)
1 a 15,728 SHS. ENANTA PHARMACEUTICALS D 2021-01-19 2024-06-06
b 10,467 SHS. ENANTA PHARMACEUTICALS D 2021-01-19 2024-06-07
c 23,805 SHS. ENANTA PHARMACEUTICALS D 2021-01-19 2024-06-08
d 6,145 SHS. ENANTA PHARMACEUTICALS D 2021-01-19 2024-08-16
e 22,903 SHS. ENANTA PHARMACEUTICALS D 2021-01-19 2024-08-19
12,100 SHS. ENANTA PHARMACEUTICAL D 2021-01-19 2024-08-20
8,852 SHS. ENANTA PHARMACEUTICAL D 2021-01-19 2024-08-21
4,114 SHS. ENANTA PHARMACEUTICAL D 2014-12-10 2024-09-24
12,268 SHS. ENANTA PHARMACEUTICAL D 2014-12-10 2024-09-25
8,618 SHS. ENANTA PHARMACEUTICAL D 2014-12-10 2024-09-27
15,439 SHS. ENANTA PHARMACEUTICAL D 2014-12-10 2024-10-03
9,561 SHS. ENANTA PHARMACEUTICAL D 2014-10-23 2024-10-04
10,536 SHS. ENANTA PHARMACEUTICAL D 2014-10-23 2024-10-11
14,255 SHS. ENANTA PHARMACEUTICAL D 2014-09-12 2024-10-14
5,209 SHS. ENANTA PHARMACEUTICAL D 2014-09-12 2024-10-15
3,145 SHS. ENANTA PHARMACEUTICAL D 2014-04-02 2024-10-25
9,805 SHS. ENANTA PHARMACEUTICAL D 2014-04-02 2024-10-28
4,575 SHS. ENANTA PHARMACEUTICAL D 2014-03-04 2024-10-29
5,588 SHS. ENANTA PHARMACEUTICAL D 2014-03-04 2024-11-08
3,786 SHS. ENANTA PHARMACEUTICAL D 2014-02-14 2024-11-11
10,626 SHS. ENANTA PHARMACEUTICAL D 2014-02-14 2024-11-12
K-1 LINE 9A BIOVENTURES INVESTORS LIMITED PARTNERSHIP II P    
(e)
Gross sales price 		(f)
Depreciation allowed
(or allowable) 		(g)
Cost or other basis
plus expense of sale 		(h)
Gain or (loss)
(e) plus (f) minus (g)
a 204,957   758,247 -553,290
b 130,428   504,614 -374,186
c 311,104   1,147,639 -836,535
d 74,994   296,250 -221,256
e 285,306   1,104,154 -818,848
151,510   583,341 -431,831
109,599   421,468 -311,869
44,766   194,355 -149,589
134,132   579,570 -445,438
88,511   406,612 -318,101
172,768   710,692 -537,924
106,600   427,508 -320,908
115,686   449,367 -333,681
161,049   585,752 -424,703
58,853   213,232 -154,379
37,712   123,737 -86,025
114,701   384,249 -269,548
51,924   177,963 -126,039
62,253   214,791 -152,538
41,269   144,545 -103,276
114,219   367,856 -253,637
    51,654 -51,654
Complete only for assets showing gain in column (h) and owned by the foundation on 12/31/69 (l)
Gains (Col. (h) gain minus
col. (k), but not less than -0-) or
Losses (from col.(h))
(i)
F.M.V. as of 12/31/69 		(j)
Adjusted basis
as of 12/31/69 		(k)
Excess of col. (i)
over col. (j), if any
a       -553,290
b       -374,186
c       -836,535
d       -221,256
e       -818,848
      -431,831
      -311,869
      -149,589
      -445,438
      -318,101
      -537,924
      -320,908
      -333,681
      -424,703
      -154,379
      -86,025
      -269,548
      -126,039
      -152,538
      -103,276
      -253,637
      -51,654
2 Capital gain net income or (net capital loss) Bracket If gain, also enter in Part I, line 7
If (loss), enter -0- in Part I, line 7		 Bracket 2 -7,275,255
3 Net short-term capital gain or (loss) as defined in sections 1222(5) and (6):
If gain, also enter in Part I, line 8, column (c) (see instructions). If (loss), enter -0-
in Part I, line 8 ................... 		Bracket 3  
Part V
Excise Tax Based on Investment Income (Section 4940(a), 4940(b), 4940(e), or 4948—see instructions)
1a Exempt operating foundations described in section 4940(d)(2), check here right arrow and enter “N/A" on line 1. Bracket for line 1a
Date of ruling or determination letter:   (attach copy of letter if necessary–see instructions) 1 20,032
b All other domestic foundations enter 1.39% (0.0139) of line 27b. Exempt foreign organizations enter 4% (0.04) of Part I, line 12, col. (b)
2 Tax under section 511 (domestic section 4947(a)(1) trusts and taxable foundations only. Others enter -0-) 2 0
3 Add lines 1 and 2........................... 3 20,032
4 Subtitle A (income) tax (domestic section 4947(a)(1) trusts and taxable foundations only. Others enter -0-) 4 0
5 Tax based on investment income. Subtract line 4 from line 3. If zero or less, enter -0- ..... 5 20,032
6 Credits/Payments:
a 2024 estimated tax payments and 2023 overpayment credited to 2024 6a 35,025
b Exempt foreign organizations—tax withheld at source...... 6b 0
c Tax paid with application for extension of time to file (Form 8868)... 6c 0
d Backup withholding erroneously withheld .......... 6d 0
7 Total credits and payments. Add lines 6a through 6d.............. 7 35,025
8 Enter any penalty for underpayment of estimated tax. Check here if Form 2220 is attached. Click to see attachment
List of Attached Documents:
// Content
8 0
9 Tax due. If the total of lines 5 and 8 is more than line 7, enter amount owed.......right arrow 9  
10 Overpayment. If line 7 is more than the total of lines 5 and 8, enter the amount overpaid...right arrow 10 14,993
11 Enter the amount of line 10 to be: Credited to 2025 estimated taxright arrow14,993 Refundedright arrow 11 0
Form 990-PF (2024)
Form 990-PF (2024)
Page 4
Part VI-A
Statements Regarding Activities
1a
During the tax year, did the foundation attempt to influence any national, state, or local legislation or did
Yes
No
it participate or intervene in any political campaign? ....................
1a
 
No
b
Did it spend more than $100 during the year (either directly or indirectly) for political purposes? See the instructions
for the definition.................................
1b
 
No
If the answer is "Yes" to 1a or 1b, attach a detailed description of the activities and copies of any materials
published or distributed by the foundation in connection with the activities.
c
Did the foundation file Form 1120-POL for this year?.....................
1c
 
No
d
Enter the amount (if any) of tax on political expenditures (section 4955) imposed during the year:
(1) On the foundation. right arrow$ 0(2) On foundation managers.right arrow$ 0
e
Enter the reimbursement (if any) paid by the foundation during the year for political expenditure tax imposed
on foundation managers.right arrow$ 0
2
Has the foundation engaged in any activities that have not previously been reported to the IRS?.......
2
 
No
If "Yes," attach a detailed description of the activities.
3
Has the foundation made any changes, not previously reported to the IRS, in its governing instrument, articles
of incorporation, or bylaws, or other similar instruments? If "Yes," attach a conformed copy of the changes....
3
 
No
4a
Did the foundation have unrelated business gross income of $1,000 or more during the year?.........
4a
Yes
 
b
If "Yes," has it filed a tax return on Form 990-T for this year?...................
4b
Yes
 
5
Was there a liquidation, termination, dissolution, or substantial contraction during the year?.........
5
Yes
 
If "Yes," attach the statement required by General Instruction T.Click to see list of attachments
List of Attached Documents:
// Content
6
Are the requirements of section 508(e) (relating to sections 4941 through 4945) satisfied either:
round bullet By language in the governing instrument, or
round bullet By state legislation that effectively amends the governing instrument so that no mandatory directions
that conflict with the state law remain in the governing instrument? ................
6
Yes
 
7
Did the foundation have at least $5,000 in assets at any time during the year? If "Yes," complete Part II, col. (c),
and Part XIV..................................
7
Yes
 
8a
Enter the states to which the foundation reports or with which it is registered (see instructions)
right arrowMA
b
If the answer is "Yes" to line 7, has the foundation furnished a copy of Form 990-PF to the Attorney
General (or designate) of each state as required by General Instruction G? If "No," attach explanation .
8b
Yes
 
9
Is the foundation claiming status as a private operating foundation within the meaning of section 4942(j)(3)
or 4942(j)(5) for calendar year 2024 or the taxable year beginning in 2024? See the instructions for Part XIII.
If "Yes," complete Part XIII .............................
9
 
No
10
Did any persons become substantial contributors during the tax year? If "Yes," attach a schedule listing their names
and addresses. Click to see attachment
List of Attached Documents:
// Content
...............................
10
Yes
 
11
At any time during the year, did the foundation, directly or indirectly, own a controlled entity within the
meaning of section 512(b)(13)? If "Yes," attach schedule. See instructions .............
11
 
No
12
Did the foundation make a distribution to a donor advised fund over which the foundation or a disqualified person had
advisory privileges? If "Yes," attach statement. See instructionsClick to see attachment
List of Attached Documents:
// Content
.................
12
Yes
 
13
Did the foundation comply with the public inspection requirements for its annual returns and exemption application?
13
Yes
 
Website addressright arrowN/A
14
The books are in care ofright arrowCHRISTOPHER C CURTIS ESQ Telephone no.right arrow (617) 338-2800

Located atright arrowSULLIVAN WORCESTER LLP 1 POSTOFFICE SQUAREBOSTONMA ZIP+4right arrow02109
15
Section 4947(a)(1) nonexempt charitable trusts filing Form 990-PF in lieu of Form 1041 —check here .........right arrow
and enter the amount of tax-exempt interest received or accrued during the year ........right arrow
15
 
16 At any time during calendar year 2024, did the foundation have an interest in or a signature or other authority over YesNo
a bank, securities, or other financial account in a foreign country? .................
16   No
See the instructions for exceptions and filing requirements for FinCEN Form 114. If "Yes", enter the name of the foreign
country right arrow
Form 990-PF (2024)
Form 990-PF (2024)
Page 5
Part VI-B
Statements Regarding Activities for Which Form 4720 May Be Required
File Form 4720 if any item is checked in the "Yes" column, unless an exception applies.
Yes
No
1a
During the year did the foundation (either directly or indirectly):
(1) Engage in the sale or exchange, or leasing of property with a disqualified person? ...........
1a(1)
 
No
(2) Borrow money from, lend money to, or otherwise extend credit to (or accept it from)
a disqualified person? ..............................
1a(2)
 
No
(3) Furnish goods, services, or facilities to (or accept them from) a disqualified person? ...........
1a(3)
 
No
(4) Pay compensation to, or pay or reimburse the expenses of, a disqualified person? ............
1a(4)
 
No
(5) Transfer any income or assets to a disqualified person (or make any of either available
for the benefit or use of a disqualified person)? ......................
1a(5)
 
No
(6) Agree to pay money or property to a government official? (Exception. Check "No"
if the foundation agreed to make a grant to or to employ the official for a period
after termination of government service, if terminating within 90 days.) ...............
1a(6)
 
No
b
If any answer is "Yes" to 1a(1)–(6), did any of the acts fail to qualify under the exceptions described in Regulations
section 53.4941(d)-3 or in a current notice regarding disaster assistance? See instructions ..........
1b
 
 
c
Organizations relying on a current notice regarding disaster assistance check here ........right arrow
d
Did the foundation engage in a prior year in any of the acts described in 1a, other than excepted acts,
that were not corrected before the first day of the tax year beginning in 2024? .............
1d
 
No
2
Taxes on failure to distribute income (section 4942) (does not apply for years the foundation was a private
operating foundation defined in section 4942(j)(3) or 4942(j)(5)):
a
At the end of tax year 2024, did the foundation have any undistributed income (Part XII, lines 6d
and 6e) for tax year(s) beginning before 2024?....................
2a
 
No
If "Yes," list the years right arrow20, 20, 20, 20
b
Are there any years listed in 2a for which the foundation is not applying the provisions of section 4942(a)(2)
(relating to incorrect valuation of assets) to the year’s undistributed income? (If applying section 4942(a)(2)
to all years listed, answer "No" and attach statement—see instructions.) ..............
2b
 
 
c
If the provisions of section 4942(a)(2) are being applied to any of the years listed in 2a, list the years here.
right arrow20, 20, 20, 20
3a
Did the foundation hold more than a 2% direct or indirect interest in any business enterprise at
any time during the year? ..............................
3a
 
No
b
If "Yes," did it have excess business holdings in 2024 as a result of (1) any purchase by the foundation
or disqualified persons after May 26, 1969; (2) the lapse of the 5-year period (or longer period approved
by the Commissioner under section 4943(c)(7)) to dispose of holdings acquired by gift or bequest; or (3)
the lapse of the 10-, 15-, or 20-year first phase holding period? (Use Schedule C, Form 4720, to determine
if the foundation had excess business holdings in 2024.) .....................
3b
 
 
4a
Did the foundation invest during the year any amount in a manner that would jeopardize its charitable purposes?
4a
 
No
b
Did the foundation make any investment in a prior year (but after December 31, 1969) that could jeopardize its
charitable purpose that had not been removed from jeopardy before the first day of the tax year beginning in 2024? ..
4b
 
No
Form 990-PF (2024)
Form 990-PF (2024)
Page 6
Part VI-B
Statements Regarding Activities for Which Form 4720 May Be Required (continued)
5a
During the year did the foundation pay or incur any amount to:
Yes
No
(1) Carry on propaganda, or otherwise attempt to influence legislation (section 4945(e))? ..........
5a(1)
 
No
(2) Influence the outcome of any specific public election (see section 4955); or to carry
on, directly or indirectly, any voter registration drive? ....................
5a(2)
 
No
(3) Provide a grant to an individual for travel, study, or other similar purposes? .............
5a(3)
 
No
(4) Provide a grant to an organization other than a charitable, etc., organization described
in section 4945(d)(4)(A)? See instructions ........................
5a(4)
 
No
(5) Provide for any purpose other than religious, charitable, scientific, literary, or
educational purposes, or for the prevention of cruelty to children or animals? .............
5a(5)
 
No
b
If any answer is "Yes" to 5a(1)–(5), did any of the transactions fail to qualify under the exceptions described in
Regulations section 53.4945 or in a current notice regarding disaster assistance? See instructions ........
5b
 
 
c
Organizations relying on a current notice regarding disaster assistance check .........right arrow
d
If the answer is "Yes" to question 5a(4), does the foundation claim exemption from the
tax because it maintained expenditure responsibility for the grant? .................
5d
 
 
If "Yes," attach the statement required by Regulations section 53.4945–5(d).
6a
Did the foundation, during the year, receive any funds, directly or indirectly, to pay premiums on
a personal benefit contract? .............................
6a
 
No
b
Did the foundation, during the year, pay premiums, directly or indirectly, on a personal benefit contract? ....
6b
 
No
If "Yes" to 6b, file Form 8870.
7a
At any time during the tax year, was the foundation a party to a prohibited tax shelter transaction?
7a
 
No
b
If "Yes", did the foundation receive any proceeds or have any net income attributable to the transaction? .....
7b
 
 
8
Is the foundation subject to the section 4960 tax on payment(s) of more than $1,000,000 in remuneration or
excess parachute payment during the year? .........................
8
 
No
Part VII
Information About Officers, Directors, Trustees, Foundation Managers, Highly Paid Employees,
and Contractors
1 List all officers, directors, trustees, foundation managers and their compensation. See instructions
(a) Name and address (b) Title, and average
hours per week
devoted to position 		(c) Compensation
 (If not paid, enter
-0-) 		(d) Contributions to employee benefit plans and deferred compensation (e) Expense account,
other allowances
SUZANNE E WERBER DWORSKY DECEASED TRUSTEE
0.00 		0 0 0
8 MERCER CIRCLE
CAMBRIDGE,MA02138
SALLY L RUBIN TRUSTEE
0.00 		0 0 0
83 KIRKSTALL ROAD
NEWTON,MA02460
2 Compensation of five highest-paid employees (other than those included on line 1—see instructions). If none, enter “NONE."
(a) Name and address of each employee paid more than $50,000 (b) Title, and average
hours per week
devoted to position 		(c) Compensation (d) Contributions to
employee benefit
plans and deferred
compensation 		(e) Expense account,
other allowances
NONE
Total number of other employees paid over $50,000...................right arrow 0
Form 990-PF (2024)
Form 990-PF (2024)
Page 7
Part VII
Information About Officers, Directors, Trustees, Foundation Managers, Highly Paid Employees,
and Contractors (continued)
3 Five highest-paid independent contractors for professional services (see instructions). If none, enter "NONE".
(a) Name and address of each person paid more than $50,000 (b) Type of service (c) Compensation
ROCKEFELLER PHILANTHROPY ADVISORS CONSULTING FOR PRIVATE FOUNDATION MANAGEMENT 262,059
120 BROADWAY SUITE 3475
NEW YORK,NY10271
NORTHERN TRUST COMPANY INVESTMENT CUSTODY AND MANAGEMENT 96,523
125 SUMMER STREET STE 1400
BOSTON,MA02110
SULLIVAN & WORCESTER LLP LEGAL & ACCOUNTING 35,227
ONE POST OFFICE SQUARE
BOSTON,MA02109
GMA FOUNDATIONS CONSULTING FOR PRIVATE FOUNDATION MANAGEMENT 1,974
2 LIBERTY SQUARE STE 500
BOSTON,MA02109
Total number of others receiving over $50,000 for professional services.............right arrow0
Part VIII-A
Summary of Direct Charitable Activities
List the foundation’s four largest direct charitable activities during the tax year. Include relevant statistical information such as the number of organizations and other beneficiaries served, conferences convened, research papers produced, etc. Expenses
1  
2  
3  
4  
Part VIII-B
Summary of Program-Related Investments (see instructions)
Describe the two largest program-related investments made by the foundation during the tax year on lines 1 and 2. Amount
1  
2  
All other program-related investments. See instructions.
3  
Total. Add lines 1 through 3.........................right arrow0
Form 990-PF (2024)
Form 990-PF (2024)
Page 8
Part IX
Minimum Investment Return (All domestic foundations must complete this part. Foreign foundations, see instructions.)
1
Fair market value of assets not used (or held for use) directly in carrying out charitable, etc.,
purposes:
a
Average monthly fair market value of securities...................
1a
22,380,458
b
Average of monthly cash balances.......................
1b
11,344,938
c
Fair market value of all other assets (see instructions)................
1c
0
d
Total (add lines 1a, b, and c).........................
1d
33,725,396
e
Reduction claimed for blockage or other factors reported on lines 1a and
1c (attach detailed explanation) .............
1e
0
2
Acquisition indebtedness applicable to line 1 assets..................
2
0
3
Subtract line 2 from line 1d.........................
3
33,725,396
4
Cash deemed held for charitable activities. Enter 1.5% (0.015) of line 3 (for greater amount, see
instructions) .............................
4
505,881
5
Net value of noncharitable-use assets. Subtract line 4 from line 3. ............
5
33,219,515
6
Minimum investment return. Enter 5% (0.05) of line 5................
6
1,660,976
Part X
Distributable Amount (see instructions) (Section 4942(j)(3) and (j)(5) private operating foundations and certain foreign organizations check here right arrow and do not complete this part.)
1
Minimum investment return from Part IX, line 6..................
1
1,660,976
2a
Tax on investment income for 2024 from Part V, line 5 .......
2a
20,032
b
Income tax for 2024. (This does not include the tax from Part V.) ...
2b
 
c
Add lines 2a and 2b............................
2c
20,032
3
Distributable amount before adjustments. Subtract line 2c from line 1............
3
1,640,944
4
Recoveries of amounts treated as qualifying distributions................
4
0
5
Add lines 3 and 4............................
5
1,640,944
6
Deduction from distributable amount (see instructions).................
6
0
7
Distributable amount as adjusted. Subtract line 6 from line 5. Enter here and on Part XII, line 1 ...
7
1,640,944
Part XI
Qualifying Distributions (see instructions)
1
Amounts paid (including administrative expenses) to accomplish charitable, etc., purposes:
a
Expenses, contributions, gifts, etc.—total from Part I, column (d), line 26 ..........
1a
51,580,014
b
Program-related investments—total from Part VIII-B..................
1b
0
2
Amounts paid to acquire assets used (or held for use) directly in carrying out charitable, etc.,
purposes...............................
2
 
3
Amounts set aside for specific charitable projects that satisfy the:
a
Suitability test (prior IRS approval required)....................
3a
 
b
Cash distribution test (attach the required schedule) .................
3b
 
4
Qualifying distributions. Add lines 1a through 3b. Enter here and on Part XII, line 4. .......
4
51,580,014
Form 990-PF (2024)
Form 990-PF (2024)
Page 9
Part XII
Undistributed Income (see instructions)
(a)
Corpus 		(b)
Years prior to 2023 		(c)
2023 		(d)
2024
1 Distributable amount for 2024 from Part X, line 7 1,640,944
2 Undistributed income, if any, as of the end of 2024:
a Enter amount for 2023 only....... 0
b Total for prior years:20 , 20, 20 0
3 Excess distributions carryover, if any, to 2024:
a From 2019......  
b From 2020...... 16,278,584
c From 2021...... 4,124,029
d From 2022...... 22,216,213
e From 2023...... 139,434,676
f Total of lines 3a through e ........ 182,053,502
4Qualifying distributions for 2024 from Part
XI, line 4: right arrow$ 51,580,014
a Applied to 2023, but not more than line 2a 0
b Applied to undistributed income of prior years
(Election required—see instructions)..... 		0
c Treated as distributions out of corpus (Election
required—see instructions)........ 		0
d Applied to 2024 distributable amount..... 1,640,944
e Remaining amount distributed out of corpus 49,939,070
5 Excess distributions carryover applied to 2024. 0 0
(If an amount appears in column (d), the
same amount must be shown in column (a).)
6Enter the net total of each column as
indicated below:
a Corpus. Add lines 3f, 4c, and 4e. Subtract line 5 231,992,572
b Prior years’ undistributed income. Subtract
line 4b from line 2b .......... 		0
c Enter the amount of prior years’ undistributed
income for which a notice of deficiency has
been issued, or on which the section 4942(a)
tax has been previously assessed...... 		0
d Subtract line 6c from line 6b. Taxable amount
—see instructions ........... 		0
e Undistributed income for 2023. Subtract line
4a from line 2a. Taxable amount—see
instructions ............. 		0
f Undistributed income for 2024. Subtract
lines 4d and 5 from line 1. This amount must
be distributed in 2025 .......... 		0
7 Amounts treated as distributions out of
corpus to satisfy requirements imposed by
section 170(b)(1)(F) or 4942(g)(3) (Election may
be required - see instructions) ....... 		0
8 Excess distributions carryover from 2019 not
applied on line 5 or line 7 (see instructions) ... 		0
9 Excess distributions carryover to 2025.
Subtract lines 7 and 8 from line 6a ...... 		231,992,572
10 Analysis of line 9:
a Excess from 2020.... 16,278,584
b Excess from 2021.... 4,124,029
c Excess from 2022.... 22,216,213
d Excess from 2023.... 139,434,676
e Excess from 2024.... 49,939,070
Form 990-PF (2024)
Form 990-PF (2024)
Page 10
Part XIII
Private Operating Foundations (see instructions and Part VI-A, question 9)
1a If the foundation has received a ruling or determination letter that it is a private operating
foundation, and the ruling is effective for 2024, enter the date of the ruling ...... right arrow
 
b Check box to indicate whether the organization is a private operating foundation described in section or
2a Enter the lesser of the adjusted net
income from Part I or the minimum
investment return from Part IX for each
year listed .......... 		Tax year Prior 3 years (e) Total
(a) 2024 (b) 2023 (c) 2022 (d) 2021
         
b 85% (0.85) of line 2a .........          
c Qualifying distributions from Part XI,
line 4 for each year listed ..... 		         
d Amounts included in line 2c not used directly
for active conduct of exempt activities .......... 		         
e Qualifying distributions made directly
for active conduct of exempt activities.
Subtract line 2d from line 2c .... 		         
3 Complete 3a, b, or c for the
alternative test relied upon:
a “Assets" alternative test—enter:
(1) Value of all assets ......          
(2) Value of assets qualifying
under section 4942(j)(3)(B)(i)		          
b “Endowment" alternative test— enter 2/3
of minimum investment return shown in
Part IX, line 6 for each year listed .. 		         
c “Support" alternative test—enter:
(1) Total support other than gross
investment income (interest,
dividends, rents, payments
on securities loans (section
512(a)(5)), or royalties) .... 		         
(2) Support from general public
and 5 or more exempt
organizations as provided in
section 4942(j)(3)(B)(iii).... 		         
(3) Largest amount of support
from an exempt organization		          
(4) Gross investment income          
Part XIV
Supplementary Information (Complete this part only if the foundation had $5,000 or more in
assets at any time during the year—see instructions.)
1Information Regarding Foundation Managers:
aList any managers of the foundation who have contributed more than 2% of the total contributions received by the foundation
before the close of any tax year (but only if they have contributed more than $5,000). (See section 507(d)(2).)
bList any managers of the foundation who own 10% or more of the stock of a corporation (or an equally large portion of the
ownership of a partnership or other entity) of which the foundation has a 10% or greater interest.
2Information Regarding Contribution, Grant, Gift, Loan, Scholarship, etc., Programs:
Check here right arrow if the foundation only makes contributions to preselected charitable organizations and does not accept
unsolicited requests for funds. If the foundation makes gifts, grants, etc. to individuals or organizations under
other conditions, complete items 2a, b, c, and d. See instructions
aThe name, address, and telephone number or email address of the person to whom applications should be addressed:
bThe form in which applications should be submitted and information and materials they should include:
cAny submission deadlines:
dAny restrictions or limitations on awards, such as by geographical areas, charitable fields, kinds of institutions, or other
factors:
Form 990-PF (2024)
Form 990-PF (2024)
Page 11
Part XIV
Supplementary Information (continued)
3 Grants and Contributions Paid During the Year or Approved for Future Payment
Recipient If recipient is an individual,
show any relationship to
any foundation manager
or substantial contributor
 Foundation
status of
recipient 		Purpose of grant or
contribution 		Amount
Name and address (home or business)
aPaid during the year

AMERICAN JOURNALISM PROJECT

6218 GEORGIA AVE NW STE 1-599
WASHINGTON,DC20011 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - GENERAL OPERATIONS 825,000

BOSTON DEBATE LEAGUE

1542 TREMONT ST
BOSTON,MA02120 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - SUPPORT "ADVANCING ACHIEVEMENT & IMPACT" 325,000

CAMBRIDGE PUBLIC SCHOOLS

159 THORNDIKE STREET
CAMBRIDGE,MA02141 		  PUBLIC MUSIC EDUCATION - MUSIC DEPARTMENT INITIATIVES - KODALY PROGRAM & MUSIC ACADEMIC YEAR 2023-2024 303,754

CAMPAIGN LEGAL CENTER

1101 14TH ST NW STE 400
WASHINGTON,DC20005 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - COMBATING ELECTION SABOTAGE 3,250,000

EDVESTORS INC

200 NEWBURY STREET
BOSTON,MA02116 		  PUBLIC MUSIC EDUCATION - SUPPORT MUSIC PROGRAM OF BOSTON PUBLIC SCHOOLS ARTS EXPANSION 550,000

FAIR ELECTIONS CENTER

1825 K ST NW STE 450
WASHINGTON,DC20006 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - CAMPUS VOTE PROJECT 650,000

FIDELITY CHARITABLE GIFT FUND

PO BOX 770001
CINCINNATI,OH45277 		  PUBLIC OTHER PHILANTHROPIC ENDEAVORS 150,000

GENERATION CITIZEN

110 WALL ST 5TH FLOOR
NEW YORK,NY10005 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - HANDS-ON CIVICS EDUCATION 500,000

HARMONY PROGRAM

244-250 WEST 54TH ST STE 300
NEW YORK,NY10019 		  PUBLIC MUSIC EDUCATION - PROJECT SUPPORT FOR DEVELOPMENT OF A COMPREHENSIVE YOUTH ORCHESTRA SYSTEM NYC FOR 03/25/2024-07/14/2026 2,000,000

KEYS MUSIC

2200 NORTH AVENUE
BRIDGEPORT,CT06604 		  PUBLIC MUSIC EDUCATION - GENERAL SUPPORT PROVIDING FREE MUSIC EDUCATION FOR VOICE & INSTRUMENTS K-12 IN PUBLIC SCHOOLS 300,000

MASSACHUSETTS BUDGET AND POLICY CENTER INC

ONE STATE ST STE 1250
BOSTON,MA02109 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - SUPPORT "DELIVERING ON EQUITY COLLECTIVE" 325,000

NEW ENGLAND CONSERVATORY OF MUSIC

290 HUNTINGTON AVENUE
BOSTON,MA02115 		  PUBLIC MUSIC EDUCATION - SUPPORT NEC PREPARATORY DIVISION'S EARLY CHILDHOOD EDUCATION PILOT PROJECT 500,000

NEW VENTURE FUND FBO MEDIA DEMOCRACY FUND

1828 L STREET NW 300-A
WASHINGTON,DC20036 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - SUPPORT MEDIA DEMOCRACY FUND'S DISINFORMATION DEFENSE LEAGUE 600,000

OPEN SECRETS

300 L STREET NW SUITE 200
WASHINGTON,DC20005 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - SUPPORT FOR "UP FOR DEBATE: ISSUES, CONTROVERSIES & MONEY" 500,000

PARENTCHILD INC

242 W 30TH STREET 1000
NEW YORK,NY10001 		  PUBLIC EARLY CHILDHOOD DEVELOPMENT - EXPANSION OF EXISTING SITES & NEW SITES 500,000

PARENTCORPS

180 MADISON AVENUE FLOOR 2
NEW YORK,NY10016 		  PUBLIC EARLY CHILDHOOD DEVELOPMENT - GENERAL OPERATING SUPPORT, EXPANSION OF PRE-K FOR ALL FOR 03/15/2024-08/14/2026 3,000,000

PRO PUBLICA

155 AVENUE OF THE AMERICAS 13TH FL
NEW YORK,NY10013 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - GENERAL OPERATING SUPPORT, FIVE-YEAR PLAN - INVESTIGATIVE REPORTING FOR 03/15/2024-03/05/2029 2,500,000

PROTECT DEMOCRACY PROJECT

2020 PENNSYLVANIA AVE NW 163
WASHINGTON,DC20006 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - GENERAL OPERATING SUPPORT, SAFEBUARDING ELECTIONS & LEGAL ACCOUNTABILITY FOR 03/15/2024-03/15/2026 10,000,000

SD FOUNDATION FBO VOTING RIGHTS LAB

611 PENNSYLVANIA AVE SE 201
WASHINGTON,DC20003 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - GENERAL OPERATING SUPPORT, SUPPORTING GENERAL ELECTION OFFICIALS IN 2024 ELECTION FOR 03/13/2024-03/31/2025 2,500,000

STATES UNITED DEMOCRACY CENTER INC

1101 17TH ST SUITE 250
WASHINGTON,DC20036 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - GENERAL OPERATING SUPPORT, SAFEBUARDING ELECTIONS & LEGAL ACCOUNTABILITY FOR 03/15/2024-03/15/2026 5,000,000

THE READING LEAGUE INC

103 WYOMING ST 2ND FLOOR
SYRACUSE,NY13204 		  PUBLIC EARLY CHILDHOOD DEVELOPMENT - GENERAL OPERATING SUPPORT, FURTHER THE SCIENCE OF READING MOVEMENT FOR 03/15/2024-03/15/2026 2,500,000

TIDES FOUNDATION FBO MOVEMENT VOTER FUND

37 BRIDGE ST BOX 749
NORTHAMPTON,MA01060 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - MOVEMENT VOTER FUND: EXPANDING DEMOCRACY THROUGH CIVIC ENGAGEMENT 1,500,000

WILLIAM J BRENNAN JR CENTER FOR JUSTICE INC

120 BROADWAY SUITE 1750
NEW YORK,NY10271 		  PUBLIC DEMOCRACY & CIVIC ENGAGEMENT - ADVANCE PROJECTS FOCUSING ON STATE & FEDERAL COURTS AND CONSTITUTIONS 10,000,000

YOUNG PEOPLE'S CHORUS OF NEW YORK CITY

37 WEST 65TH ST 2ND FL
NEW YORK,NY10023 		  PUBLIC MUSIC EDUCATION - GENERAL SUPPORT, SERVING AGES 8-18 IN VARIOUS CHORUSES FOR 03/15/2024-09/15/2027 3,000,000
Total .................................right arrow 3a 51,278,754
bApproved for future payment
Total ................................. right arrow 3b 0
Form 990-PF (2024)
Form 990-PF (2024)
Page 12
Part XV-A
Analysis of Income-Producing Activities
Enter gross amounts unless otherwise indicated. Unrelated business income Excluded by section 512, 513, or 514 (e)
Related or exempt
function income
(See instructions.)
1Program service revenue: (a)
Business code 		(b)
Amount 		(c)
Exclusion code 		(d)
Amount
a
b
c
d
e
f
gFees and contracts from government agencies          
2 Membership dues and assessments ....          
3 Interest on savings and temporary cash
investments ........... 		         
4 Dividends and interest from securities ....     14 1,545,880  
5 Net rental income or (loss) from real estate:
aDebt-financed property......          
bNot debt-financed property.....          
6 Net rental income or (loss) from personal property          
7 Other investment income ..... 541700 28,544      
8 Gain or (loss) from sales of assets other than
inventory ............ 		    18 -7,275,255  
9 Net income or (loss) from special events:          
10 Gross profit or (loss) from sales of inventory          
11 Other revenue:
a
b
c
d
e
12 Subtotal. Add columns (b), (d), and (e) .. 28,544 -5,729,375 0
13Total. Add line 12, columns (b), (d), and (e)..................
13
-5,700,831
(See worksheet in line 13 instructions to verify calculations.)
Part XV-B
Relationship of Activities to the Accomplishment of Exempt Purposes
Line No.
DownArrow 		Explain below how each activity for which income is reported in column (e) of Part XV-A contributed importantly to
the accomplishment of the foundation’s exempt purposes (other than by providing funds for such purposes). (See
instructions.)
Form 990-PF (2024)
Form 990-PF (2024)
Page 13
Part XVI
Information Regarding Transfers To and Transactions and Relationships With Noncharitable Exempt Organizations
1
Did the organization directly or indirectly engage in any of the following with any other organization described in section 501(c) (other than section 501(c)(3) organizations) or in section 527, relating to political organizations?
Yes
No
a
Transfers from the reporting foundation to a noncharitable exempt organization of:
(1) Cash...................................
1a(1)
 
No
(2) Other assets.................................
1a(2)
 
No
b
Other transactions:
(1) Sales of assets to a noncharitable exempt organization....................
1b(1)
 
No
(2) Purchases of assets from a noncharitable exempt organization..................
1b(2)
 
No
(3) Rental of facilities, equipment, or other assets.......................
1b(3)
 
No
(4) Reimbursement arrangements...........................
1b(4)
 
No
(5) Loans or loan guarantees.............................
1b(5)
 
No
(6) Performance of services or membership or fundraising solicitations................
1b(6)
 
No
c
Sharing of facilities, equipment, mailing lists, other assets, or paid employees..............
1c
 
No
d
If the answer to any of the above is "Yes," complete the following schedule. Column (b) should always show the fair market value
of the goods, other assets, or services given by the reporting foundation. If the foundation received less than fair market value
in any transaction or sharing arrangement, show in column (d) the value of the goods, other assets, or services received.
(a) Line No. (b) Amount involved (c) Name of noncharitable exempt organization (d) Description of transfers, transactions, and sharing arrangements
2a
Is the foundation directly or indirectly affiliated with, or related to, one or more tax-exempt organizations
described in section 501(c) (other than section 501(c)(3)) or in section 527? ...........
b
If "Yes," complete the following schedule.

(a) Name of organization (b) Type of organization (c) Description of relationship
Sign Here
Under penalties of perjury, I declare that I have examined this return, including accompanying schedules and statements, and to the best of my knowledge and belief, it is true, correct, and complete. Declaration of preparer (other than taxpayer) is based on all information of which preparer has any knowledge.
right arrow right arrow
May the IRS discuss this return
with the preparer shown below?
See instructions.
Signature of officer or trustee Date Title
Paid Preparer Use Only Print/Type preparer's name Preparer's Signature Date Check if self-
employed right arrow		 PTIN
Firm's name Right Arrow
 Firm's EIN Right Arrow
Firm's address Right Arrow


 Phone no.
Form 990-PF (2024)
Additional Data


Software ID:  
Software Version:  


Form 990PF - Special Condition Description:
Special Condition Description
Schedule B
(Form 990)
(Rev. January 2025)
Department of the Treasury
Internal Revenue Service
Schedule of Contributors

right arrow Attach to Form 990, 990-EZ, or 990-PF.
right arrow Go to www.irs.gov/Form990 for the latest information.
OMB No. 1545-0047
Name of the organization
POPPLESTONE FOUNDATION
C/O SULLIVAN & WORCESTER LLP
Employer identification number

04-3528004
Organization type (check one):
Filers of:
Section:
Form 990 or 990-EZ
501(c)( ) (enter number) organization

4947(a)(1) nonexempt charitable trust not treated as a private foundation

527 political organization


Form 990-PF
501(c)(3) exempt private foundation

4947(a)(1) nonexempt charitable trust treated as a private foundation

501(c)(3) taxable private foundation
Check if your organization is covered by the General Rule or a Special Rule.  
Note:  Only a section 501(c)(7), (8), or (10) organization can check boxes for both the General Rule and a Special Rule. See instructions.
General Rule
For an organization filing Form 990, 990-EZ, or 990-PF that received, during the year, contributions totaling $5,000 or more (in money or other property) from any one contributor. Complete Parts I and II. See instructions for determining a contributor's total contributions.
Special Rules
For an organization described in section 501(c)(3) filing Form 990 or 990-EZ that met the 331/3% support test of the regulations
under sections 509(a)(1) and 170(b)(1)(A)(vi), that checked Schedule A (Form 990 or 990-EZ), Part II, line 13, 16a, or 16b, and that received from any one contributor, during the year, total contributions of the greater of (1) $5,000 or (2) 2% of the amount on (i) Form 990, Part VIII, line 1h, or (ii) Form 990-EZ, line 1. Complete Parts I and II.
For an organization described in section 501(c)(7), (8), or (10) filing Form 990 or 990-EZ that received from any one contributor,
during the year, total contributions of more than $1,000 exclusively for religious, charitable, scientific, literary, or educational purposes, or for the prevention of cruelty to children or animals. Complete Parts I, II, and III.
For an organization described in section 501(c)(7), (8), or (10) filing Form 990 or 990-EZ that received from any one contributor,
during the year, contributions exclusively for religious, charitable, etc., purposes, but no such contributions totaled more than $1,000. If this box is checked, enter here the total contributions that were received during the year for an exclusively religious, charitable, etc., purpose. Don't complete any of the parts unless the General Rule applies to this organization because it received nonexclusively religious, charitable, etc., contributions totaling $5,000 or more during the year ......... Right Arrow $  
Caution: An organization that isn't covered by the General Rule and/or the Special Rules doesn't file Schedule B (Form 990,
990-EZ, or 990-PF), but it must answer “No” on Part IV, line 2, of its Form 990; or check the box on line H of its Form 990-EZ
or on its Form 990PF, Part I, line 2, to certify that it doesn't meet the filing requirements of Schedule B (Form 990,
990-EZ, or 990-PF).
For Paperwork Reduction Act Notice, see the Instructions
for Form 990, 990-EZ, or 990-PF.
Cat. No. 30613XSchedule B (Form 990) (Rev. 1-2025)
Schedule B (Form 990) (Rev. 1-2025) Page 2
Name of organization
POPPLESTONE FOUNDATION
C/O SULLIVAN & WORCESTER LLP 		Employer identification number
04-3528004
Part I
Contributors (see instructions). Use duplicate copies of Part I if additional space is needed.
(a)
No.		 (b)
Name, address, and ZIP + 4		 (c)
Total contributions		 (d)
Type of contribution
1
ALAN J DWORSKY IRREVOCABLE TRUST
 
8 MERCER CIRCLE
 
CAMBRIDGE, MA02138

$ 6,897,404


(Complete Part II for noncash contributions.)
(a)
No.		 (b)
Name, address, and ZIP + 4		 (c)
Total contributions		 (d)
Type of contribution
 
 
 
 

$  


(Complete Part II for noncash contributions.)
(a)
No.		 (b)
Name, address, and ZIP + 4		 (c)
Total contributions		 (d)
Type of contribution
 
 
 
 

$  


(Complete Part II for noncash contributions.)
(a)
No.		 (b)
Name, address, and ZIP + 4		 (c)
Total contributions		 (d)
Type of contribution
 
 
 
 

$  


(Complete Part II for noncash contributions.)
(a)
No.		 (b)
Name, address, and ZIP + 4		 (c)
Total contributions		 (d)
Type of contribution
 
 
 
 

$  


(Complete Part II for noncash contributions.)
(a)
No.		 (b)
Name, address, and ZIP + 4		 (c)
Total contributions		 (d)
Type of contribution
 
 
 
 

$  


(Complete Part II for noncash contributions.)
Schedule B (Form 990) (Rev. 1-2025)
Schedule B (Form 990) (Rev. 1-2025)
Page 3
Name of organization
POPPLESTONE FOUNDATION
C/O SULLIVAN & WORCESTER LLP 		Employer identification number

04-3528004
Part II
Noncash Property (see instructions). Use duplicate copies of Part II if additional space is needed.
(a)
No. from Part I 		(b)
Description of noncash property given 		(c)
FMV (or estimate)
(See instructions) 		(d)
Date received
 
$    
(a)
No. from Part I 		(b)
Description of noncash property given 		(c)
FMV (or estimate)
(See instructions) 		(d)
Date received
 
$    
(a)
No. from Part I 		(b)
Description of noncash property given 		(c)
FMV (or estimate)
(See instructions) 		(d)
Date received
 
$    
(a)
No. from Part I 		(b)
Description of noncash property given 		(c)
FMV (or estimate)
(See instructions) 		(d)
Date received
 
$    
(a)
No. from Part I 		(b)
Description of noncash property given 		(c)
FMV (or estimate)
(See instructions) 		(d)
Date received
 
$    
(a)
No. from Part I 		(b)
Description of noncash property given 		(c)
FMV (or estimate)
(See instructions) 		(d)
Date received
 
$    
Schedule B (Form 990) (Rev. 1-2025)
Schedule B (Form 990) (Rev. 1-2025)
Page 4
Name of organization
POPPLESTONE FOUNDATION
C/O SULLIVAN & WORCESTER LLP 		Employer identification number

04-3528004
Part III
Exclusively religious, charitable, etc., contributions to organizations described in section 501(c) (7), (8), or (10) that total more than $1,000 for the year from any one contributor. Complete columns (a) through (e) and the following line entry. For organizations completing Part III, enter the total of exclusively religious, charitable, etc., contributions of $1,000 or less for the year. (Enter this information once. See instructions.) $  
Use duplicate copies of Part III if additional space is needed.
(a)
No. from Part I		 (b) Purpose of gift (c) Use of gift (d) Description of how gift is held
 
(e) Transfer of gift
Transferee's name, address, and ZIP 4 Relationship of transferor to transferee
 
 
     
 
(a)
No. from Part I		 (b) Purpose of gift (c) Use of gift (d) Description of how gift is held
 
(e) Transfer of gift
Transferee's name, address, and ZIP 4 Relationship of transferor to transferee
 
 
     
 
(a)
No. from Part I		 (b) Purpose of gift (c) Use of gift (d) Description of how gift is held
 
(e) Transfer of gift
Transferee's name, address, and ZIP 4 Relationship of transferor to transferee
 
 
     
 
(a)
No. from Part I		 (b) Purpose of gift (c) Use of gift (d) Description of how gift is held
 
(e) Transfer of gift
Transferee's name, address, and ZIP 4 Relationship of transferor to transferee
 
 
     
 
Schedule B (Form 990) (Rev. 1-2025)
Additional Data


Software ID:  
Software Version:  

TY 2024 DissolutionStmt
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Dissolution Name Dissolution Address Explanation Dissolution Amount
SEE THE CHARITABLE RECIPIENTS ON FORM 990-PF PART XIV C/O ONE POST OFFICE SQUARE
BOSTON,MA02109 		THE FOUNDATION HAS NO CURRENT PLAN TO DISSOLVE, BUT IN 2024 IT HAS MADE AND IT WILL CONTINUE TO MAKE SUBSTANTIAL DISTRIBUTIONS TO CHARITABLE ORGANIZATIONS IN ORDER TO ADVANCE THE FOUNDATION'S CHARITABLE PURPOSES. 51,278,754


TY 2024 InvestmentsGovtObligationsSch
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
US Government Securities - End of Year Book Value:

26,237,155
US Government Securities - End of Year Fair Market Value:

17,128,320
State & Local Government Securities - End of Year Book Value:


0
State & Local Government Securities - End of Year Fair Market Value:


0


TY 2024 InvestmentsOtherSchedule2
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Category/ Item Listed at Cost or FMV Book Value End of Year Fair Market Value
BIOVENTURES INVESTORS, LPII AT COST 972,551 972,551

TY 2024 LiquidationExplanationStmt
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Statement:
THE FOUNDATION HAS BEEN MAKING SUBSTANTIAL DISTRIBUTIONS TO CHARITY AS PART OF ITS CHARITABLE PURPOSE. THE AGGREGATE CHARITABLE DISTRIBUTIONS IN 2024 SUBSTANTIALLY EXCEEDED CONTRIBUTIONS AND NET INVESTMENT INCOME. THERE IS NO CURRENT PLAN TO LIQUIDATE THE FOUNDATION, BUT IT WILL CONTINUE TO MAKE SUBSTANTIAL CHARITABLE DISTRIBUTIONS.


TY 2024 LegalFeesSchedule
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
SULLIVAN & WORCESTER LLP 35,227 0   35,227


TY 2024 OtherDecreasesSchedule
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Description Amount
ROUNDING 1


TY 2024 OtherExpensesSchedule
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Description Revenue and Expenses per Books Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
2022 MA FORM PC FILING FEE 2,000 0   2,000
BIOVENTURES INVESTORS LIMITED K-1 INTEREST EXPENSE 27,057 27,057   0
BIOVENTURES INVESTORS LIMITED K-1 DEDUCTIONS 7,291 7,291   0
GMA FOUNDATIONS INC. CONSULTING FEES 1,974 0   1,974
ROCKEFELLER PHILANTHROPY ADVISORS FEES 262,059 0   262,059
NORTHERN TRUST FEES 96,523 96,523   0
BIOVENTURES INVESTORS LIMITED K-1 FOREIGN TAX PAID 2,397 2,397   0


TY 2024 OtherIncomeSchedule2
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Description Revenue And Expenses Per Books Net Investment Income Adjusted Net Income
BIOVENTURES INVESTORS LP II ORDINARY BUSINESS INCOME -2,779 -2,779 -2,779
BIOVENTURES INVESTORS LP II DEBT-FINANCED INTEREST INCOME 31,323 31,323 31,323
BIOVENTURES INVESTORS LP II DEBT-FINANCED DIVIDEND INCOME 0 0 0


TY 2024 SubstantialContributorsSch
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Name Address
ALAN J DWORSKY IRREVOCABLE TRUST
  		8 MERCER CIRCLE
CAMBRIDGE,MA02138


TY 2024 TaxesSchedule
Name:
POPPLESTONE FOUNDATION
 
C/O SULLIVAN & WORCESTER LLP
EIN:
04-3528004
Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
2023 TAX PAYMENT FORM 990-PF 70,000 0   0
2022 FORM 990-PF FORM 2220 ESTIMATED TAX PENALTY 5,200 0   0