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
ARRILLAGA FOUNDATION
 
Number and street (or P.O. box number if mail is not delivered to street address)2450 WATSON COURT
  Room/suite
City or town, state or province, country, and ZIP or foreign postal code
PALO ALTO, CA94303
A Employer identification number

94-2460896
B Telephone number (see instructions)

(650) 618-7000
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$50,859,228J 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) 26,236,000
2 Check right arrow.............
3 Interest on savings and temporary cash investments      
4 Dividends and interest from securities... 1,560,140 1,560,140  
5a Gross rents............ 217,742 217,742  
b Net rental income or (loss) 196,716
6a Net gain or (loss) from sale of assets not on line 10 650,268
b Gross sales price for all assets on line 6a 10,970,592
7 Capital gain net income (from Part IV, line 2)... 1,627,035
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).......      
12 Total. Add lines 1 through 11........ 28,664,150 3,404,917  
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
121,421 60,710   0
b Accounting fees (attach schedule)....... Click to see attachment
List of Attached Documents:
// Content
41,450 20,725   0
c Other professional fees (attach schedule).... Click to see attachment
List of Attached Documents:
// Content
4,500 4,500   0
17 Interest...............        
18 Taxes (attach schedule) (see instructions)... Click to see attachment
List of Attached Documents:
// Content
130,200 0   0
19 Depreciation (attach schedule) and depletion... Click to see attachment
List of Attached Documents:
// Content
31,806 21,026  
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
6,749 6,250   0
24 Total operating and administrative expenses.
Add lines 13 through 23.......... 336,126 113,211   0
25 Contributions, gifts, grants paid....... 9,451,000 9,451,000
26 Total expenses and disbursements. Add lines 24 and 25 9,787,126 113,211   9,451,000
27 Subtract line 26 from line 12:
a Excess of revenue over expenses and disbursements 18,877,024
b Net investment income (if negative, enter -0-) 3,291,706
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......... 36,158 499,281 499,281
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)      
b Investments—corporate stock (attach schedule).......      
c Investments—corporate bonds (attach schedule).......      
11 Investments—land, buildings, and equipment: basis right arrow24,970,000
Less: accumulated depreciation (attach schedule) right arrow31,806   Click to see attachment
List of Attached Documents:
// Content
24,938,194 		24,938,194
12 Investments—mortgage loans.............      
13 Investments—other (attach schedule).......... 31,781,484 Click to see attachment
List of Attached Documents:
// Content
25,421,753 		25,421,753
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) 31,817,642 50,859,228 50,859,228
Liabilities 17 Accounts payable and accrued expenses..........   41,862
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) Click to see attachment
List of Attached Documents:
// Content
5,000,000 		Click to see attachment
List of Attached Documents:
// Content
5,122,700
23 Total liabilities (add lines 17 through 22)......... 5,000,000 5,164,562
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........... 26,817,642 45,694,666
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........    
27 Paid-in or capital surplus, or land, bldg., and equipment fund    
28 Retained earnings, accumulated income, endowment, or other funds    
29 Total net assets or fund balances (see instructions)..... 26,817,642 45,694,666
30 Total liabilities and net assets/fund balances (see instructions). 31,817,642 50,859,228
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
26,817,642
2
Enter amount from Part I, line 27a .....................
2
18,877,024
3
Other increases not included in line 2 (itemize) right arrow
3
0
4
Add lines 1, 2, and 3 ..........................
4
45,694,666
5
Decreases not included in line 2 (itemize) right arrow
5
0
6
Total net assets or fund balances at end of year (line 4 minus line 5)—Part II, column (b), line 29 .
6
45,694,666
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 36,343.593 SHS OF PAYDEN GLOBAL LOW DURATION FUND P 2023-12-28 2024-06-21
b 84,850.994 SHS OF PAYDEN LIMITED MATURITY FUND SI CLASS P 2023-12-28 2024-11-06
c 213,103.365 SHS OF PAYDEN HIGH INCOME FUND SI CLASS P 2022-07-11 2024-11-06
d 8,771.930 SHS OF PAYDEN LOW DURATION FUND SI CLASS P 2022-07-11 2024-03-06
e 58,823.528 SHS PAYDEN U.S. GOVERNMENT FUND P 2023-01-01 2024-11-21
120,259.814 SHS OF PAYDEN GNMA FUND P 2022-07-28 2024-10-07
295,015.650 SHS OF PAYDEN EQUITY INCOME FUND SI CLASS P 2015-05-31 2024-11-06
UNREALIZED GAIN/LOSS P 2024-12-31 2024-12-31
UNREALIZED GAIN/LOSS P 2024-12-31 2024-12-31
CAPITAL GAIN DIVIDENDS - PAYDEN & RYGEL P 2023-01-01 2024-12-31
(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 350,040   349,262 778
b 810,020   806,951 3,069
c 1,334,877   1,272,748 62,129
d 85,000   84,542 458
e 550,000   567,183 -17,183
920,000   995,250 -75,250
5,500,000   5,214,388 285,612
53,233   53,233 0
      0
1,367,422     1,367,422
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       778
b       3,069
c       62,129
d       458
e       -17,183
      -75,250
      285,612
      0
      0
      1,367,422
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 1,627,035
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 45,755
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 45,755
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 45,755
6 Credits/Payments:
a 2024 estimated tax payments and 2023 overpayment credited to 2024 6a 150,149
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.............. 7 150,149
8 Enter any penalty for underpayment of estimated tax. Check here if Form 2220 is attached. 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 10 104,394
11 Enter the amount of line 10 to be: Credited to 2025 estimated taxright arrow104,394 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
 
No
b
If "Yes," has it filed a tax return on Form 990-T for this year?...................
4b
 
 
5
Was there a liquidation, termination, dissolution, or substantial contraction during the year?.........
5
 
No
If "Yes," attach the statement required by General Instruction T.
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 arrowCA
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. ...............................
10
 
No
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 instructions.................
12
 
No
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 arrowLAURA ARRILLAGA-ANDREESSEN Telephone no.right arrow (650) 618-7000

Located atright arrow2450 WATSON COURTPALO ALTOCA ZIP+4right arrow94303
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
LAURA ARRILLAGA-ANDREESSEN CO-PRESIDENT
5.00 		0 0 0
2450 WATSON COURT
PALO ALTO,CA94303
JOHN ARRILLAGA JR CO-PRESIDENT
5.00 		0 0 0
2450 WATSON COURT
PALO ALTO,CA94303
MARC ANDREESSEN TREASURER
0.00 		0 0 0
2450 WATSON COURT
PALO ALTO,CA94303
JUSTINE STAMEN ARRILLAGA SECRETARY
5.00 		0 0 0
2450 WATSON COURT
PALO ALTO,CA94303
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
NONE
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
29,741,007
b
Average of monthly cash balances.......................
1b
88,919
c
Fair market value of all other assets (see instructions)................
1c
0
d
Total (add lines 1a, b, and c).........................
1d
29,829,926
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
29,829,926
4
Cash deemed held for charitable activities. Enter 1.5% (0.015) of line 3 (for greater amount, see
instructions) .............................
4
447,449
5
Net value of noncharitable-use assets. Subtract line 4 from line 3. ............
5
29,382,477
6
Minimum investment return. Enter 5% (0.05) of line 5................
6
1,469,124
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
1,469,124
2a
Tax on investment income for 2024 from Part V, line 5 .......
2a
45,755
b
Income tax for 2024. (This does not include the tax from Part V.) ...
2b
 
c
Add lines 2a and 2b............................
2c
45,755
3
Distributable amount before adjustments. Subtract line 2c from line 1............
3
1,423,369
4
Recoveries of amounts treated as qualifying distributions................
4
0
5
Add lines 3 and 4............................
5
1,423,369
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
1,423,369
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
9,451,000
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
9,451,000
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 1,423,369
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......  
c From 2021...... 7,302,407
d From 2022...... 13,920,374
e From 2023...... 6,830,650
f Total of lines 3a through e ........ 28,053,431
4Qualifying distributions for 2024 from Part
XI, line 4: right arrow$ 9,451,000
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..... 1,423,369
e Remaining amount distributed out of corpus 8,027,631
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 36,081,062
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 ...... 		36,081,062
10 Analysis of line 9:
a Excess from 2020....  
b Excess from 2021.... 7,302,407
c Excess from 2022.... 13,920,374
d Excess from 2023.... 6,830,650
e Excess from 2024.... 8,027,631
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).)
LAURA ARRILLAGA-ANDREESSEN
JOHN ARRILLAGA JR
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

SAN FRANCISCO GENERAL HOSPITAL FOUNDATION

PO BOX 410836
SAN FRANCISCO,CA94141 		  PC GENERAL OPERATING 25,000

SILICON VALLEY SOCIAL VENTURE FUND - SV2

350 TWIN DOLPHIN DRIVE SUITE 103
REDWOOD CITY,CA94065 		  PC GENERAL OPERATING 150,000

SAN MATEO COUNTY SHERIFF'S OFFICE FOUNDATION

690 BROADWAY STREET
REDWOOD CITY,CA94063 		  PC CONSTRUCTION OF THE NEW SAN MATEO COUNTY SHERIFF'S OFFICE 3,500,000

WEST MAUI IMPROVEMENT FOUNDATION

40 KUPUOHI ST 106
LAHAINA,HI96761 		  PC OLOWALU FIRESTATION FUNDRAISER 250,000

SILICON VALLEY SOCIAL VENTURE FUND - SV2

350 TWIN DOLPHIN DRIVE SUITE 103
REDWOOD CITY,CA94065 		  PC GENERAL OPERATING 85,000

CAF AMERICA - MCA AUSTRALIA MEHRETU EXHIBITION

225 REINEKERS LANE SUITE 375
ALEXANDRIA,VA22314 		  PC GENERAL SUPPORT 264,000

BALLROOM MARFA

PO BOX 1661
MARFA,TX79843 		  PC GENERAL SUPPORT 47,000

THE TEAK FELLOWSHIP

16 WEST 22ND STREET 3RD FLOOR
NEW YORK,NY10010 		  PC CATS AND SWIM PROGRAMS 100,000

THE TEAK FELLOWSHIP

16 WEST 22ND STREET 3RD FLOOR
NEW YORK,NY10010 		  PC THE MARC E. BECKER ENDOWMENT FOR LEADERSHIP AND PROFESSIONAL DEVELOPMENT 1,000,000

CHRISTMAS BUREAU OF PALO ALTO

PO BOX 51874
PALO ALTO,CA94303 		  PC GENERAL SUPPORT 10,000

A'ALI'I MENTORING

521 ALA MOANA BLVD SUITE M302
HONOLULU,HI96813 		  PC GENERAL SUPPORT 10,000

ACHIEVE TAHOE

PO BOX 8339
TRUCKEE,CA96162 		  PC GENERAL SUPPORT 15,000

ACCESSURF HAWAII

PO BOX 15152
HONOLULU,HI96830 		  PC GENERAL SUPPORT 15,000

AL WOOTEN JR YOUTH CENTER

9106 S WESTERN AVE
LOS ANGELES,CA90047 		  PC GENERAL SUPPORT 50,000

ASSOCIATION TO BENEFIT CHILDREN

419 EAST 86TH STREET
NEW YORK,NY10028 		  PC GENERAL SUPPORT 50,000

BOSTON CHILDREN'S HOSPITAL

300 LONGWOOD AVENUE
BOSTON,MA02215 		  PC RESEARCH FOR GUT BRAIN INTERACTION 50,000

BROOKLYN DEBATE LEAGUE

463 LINCOLN PLACE 234
BROOKLYN,NY11238 		  PC GENERAL SUPPORT 20,000

BROWN UNIVERSITY

BOX 1877 69 BROWN STREET
PROVIDENCE,RI02912 		  PC PAID STUDENT LEARNING OPPORTUNITIES 500,000

CAMBODIAN CHILDREN'S FUND

2309 SANTA MONICA BLVD PMB 833
SANTA MONICA,CA90404 		  PC EDUCATIONAL PROGRAMMING 400,000

CEDARS-SINAI MEDICAL CENTER

8700 BEVERLY BLVD SUITE 2416
LOS ANGELES,CA90048 		  PC RESEARCH IN GUT MICROBIOME 50,000

CEREBRAL PALSY SOCCER INC

94 FARGO LANE
IRVINGTON,NY10533 		  PC GENERAL SUPPORT 25,000

DETERMINED TO SUCCEED

2525 OCEAN PARK BLVD SUITE 116
SANTA MONICA,CA90405 		  PC GENERAL SUPPORT 25,000

DOWNTOWN WOMEN'S CENTER

442 S SAN PEDRO STREET
LOS ANGELES,CA90013 		  PC GENERAL SUPPORT 100,000

EDUCATION PIONEERS INC

68 HARRISON AVE STE 605 PMB 14991
BOSTON,MA021111929 		  PC GENERAL SUPPORT 10,000

FOOD ALLERGY RESEARCH & EDUCATION

7901 JONES BRANCH DRIVE SUITE 240
MCLEAN,VA22102 		  PC FOOD ALLERGY RESEARCH 25,000

GIGI'S PLAYHOUSE NYC

106 WEST 117TH ST
NEW YORK,NY10026 		  PC GENERAL SUPPORT 50,000

PRESIDENT AND FELLOWS OF HARVARD COLLEGE

677 HUNTINGTON AVENUE
BOSTON,MA02115 		  PC HARVARD T.H. CHAN SCHOOL OF PUBLIC HEALTH - FOOD ALLERGY STUDY & RESEARCH 350,000

HARVARD-WESTLAKE SCHOOL

3700 COLDWATER CANYON
STUDIO CITY,CA91604 		  PC FINANCIAL AID PROGRAM 50,000

HAWAI'I FOODBANK

2611 KILIHAU ST
HONOLULU,HI96819 		  PC KEIKI SCHOOL PANTRY PROGRAM 50,000

HAWAII PERFORMING ARTS COMPANY

2833 EAST MANOA ROAD
HONOLULU,HI96822 		  PC MVT SHOW SPONSORSHIP - PARADE 15,000

ISRAEL TENNIS CENTERS FOUNDATION INC

165 EAST 56 STREET 2ND FLOOR
NEW YORK,NY10022 		  PC GENERAL SUPPORT 100,000

THE JOHN THOMAS DYE SCHOOL

11414 CHALON ROAD
LOS ANGELES,CA90049 		  PC FINANCIAL ASSISTANCE PROGRAM 25,000

KAPI'OLANI HEALTH FOUNDATION

55 MERCHANT STREET SUITE 2600
HONOLULU,HI96813 		  PC ABBIE VARA PEDIATRIC SERVICES FUND 50,000

KIDS & ART FOUNDATION

1443 HOWARD AVENUE SUITE 218
BURLINGAME,CA94010 		  PC LPCH ARTIST IN RESIDENCE PROGRAM 15,000

LEGAL OUTREACH INC

36-14 35TH STREET
LONG ISLAND CITY,NY11106 		  PC GENERAL SUPPORT 25,000

LOYOLA MARYMOUNT UNIVERSITY

UNIVERSITY HALL SUITE 2800 1 LMU
DRIVE
LOS ANGELES,CA90045 		  PC LOYOLA PROJECT FOR THE INNOCENT PROGRAM 100,000

LUCILE PACKARD FOUNDATION FOR CHILDREN'S HEALTH

400 HAMILTON AVENUE SUITE 340
PALO ALTO,CA94301 		  PC DR. JENNY FRANKOVICH'S PANS INFECTION RESEARCH 500,000

MACCABI USA INC

1511 WALNUT STREET SUITE 401
PHILADELPHIA,PA19102 		  PC FINANCIAL AID ENDOWMENT 100,000

PACIFIC AMERICAN FOUNDATION

111 HEKILI STREET SUITE A 170
KAILUA,HI96734 		  PC NALU STUDIES PROGRAM 50,000

THE PENINSULA BRIDGE PROGRAM

177 BOVET ROAD SUITE 120
SAN MATEO,CA94402 		  PC GENERAL SUPPORT 50,000

QUESTBRIDGE

PO BOX 51847
PALO ALTO,CA94303 		  PC FEASIBILITY STUDY PROGRAM 150,000

THE UCLA FOUNDATION

10889 WILSHIRE BLVD 1000
LOS ANGELES,CA90024 		  PC THE RAPE TREATMENT CENTER - GENERAL SUPPORT 250,000

READY TO SUCCEED

1514 17TH STREET SUITE 201
SANTA MONICA,CA90404 		  PC READY TO SUCCEED ALUMNI AND EARLY CAREER ENGAGEMENT PROGRAM 200,000

RONALD MCDONALD HOUSE CHARITIES OF HAWAII

PO BOX 61777
HONOLULU,HI968391777 		  PC GENERAL SUPPORT 35,000

CO-CATHEDRAL OF ST THERESA CHURCH OF THE CHILD JESUS

712 N SCHOOL STREET
HONOLULU,HI96817 		  PC PARISH SECURITY FENCE PROJECT 10,000

STORYCORPS

80 HANSON PLACE 8TH FLOOR
BROOKLYN,NY11217 		  PC GENERAL SUPPORT 100,000

UC SANTA BARBARA FOUNDATION

UNIVERSITY OF CALIFORNIA
SANTA BARBARA,CA931061130 		  PC THE TED DEIXLER MEMORIAL FUND 10,000

UNIVERSITY OF WASHINGTON FOUNDATION

UW GIFT SERVICES BOX 359505
SEATTLE,WA981956460 		  PC UW MEDICINE FAMILY PLANNING FUND 50,000

VISION TO LEARN

12100 WILSHIRE BLVD SUITE 1275
LOS ANGELES,CA90025 		  PC GENERAL SUPPORT 200,000

WORLD CONNECT INC

1370 AVENUE OF THE AMERICAS 29TH FL
NEW YORK,NY10019 		  PC GENERAL SUPPORT 20,000

PALO ALTO WEEKLY HOLIDAY FUND (EMBARCADERO MEDIA FOUNDATION)

2345 YALE ST
PALO ALTO,CA94306 		  PC GENERAL SUPPORT 10,000

BALLROOM MARFA

PO BOX 1661
MARFA,TX79843 		  PC GENERAL SUPPORT 100,000

CAMINAR

411 BOREL AVENUE SUITE 101
SAN MATEO,CA94402 		  PC GENERAL SUPPORT 10,000
Total .................................right arrow 3a 9,451,000
bApproved for future payment

IOLANI SCHOOL
563 KAMOKU STREET
HONOLULU,HI96826 		  PC BUILDING NEW STUDENT CENTER 5,000,000
Total ................................. right arrow 3b 5,000,000
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 1,560,140  
5 Net rental income or (loss) from real estate:
aDebt-financed property......          
bNot debt-financed property.....     16 196,716  
6 Net rental income or (loss) from personal property          
7 Other investment income .....          
8 Gain or (loss) from sales of assets other than
inventory ............ 		    18 650,268  
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) .. 0 2,407,124 0
13Total. Add line 12, columns (b), (d), and (e)..................
13
2,407,124
(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
ARRILLAGA FOUNDATION
 
Employer identification number

94-2460896
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
ARRILLAGA FOUNDATION
  		Employer identification number
94-2460896
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
JOHN ARRILLAGA SURVIVOR'S TRUST
 
2450 WATSON COURT
 
PALO ALTO, CA94303

$ 24,970,000


(Complete Part II for noncash contributions.)
(a)
No.		 (b)
Name, address, and ZIP + 4		 (c)
Total contributions		 (d)
Type of contribution
2
DEL REY INVESTMENT COMPANY
 
2450 WATSON COURT
 
PALO ALTO, CA94303

$ 236,000


(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
ARRILLAGA FOUNDATION
  		Employer identification number

94-2460896
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
1
 3430 W. BAYSHORE ROAD, PALO ALTO, CA 94303 $ 24,970,000 2024-11-13
(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
ARRILLAGA FOUNDATION
  		Employer identification number

94-2460896
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 AccountingFeesSchedule
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
ACCOUNTING FEES 41,450 20,725   0

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TY 2024 DepreciationSchedule
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Description of Property Date Acquired Cost or Other Basis Prior Years' Depreciation Computation Method Rate /
Life (# of years)		 Current Year's Depreciation Expense Net Investment Income Adjusted Net Income Cost of Goods Sold Not Included
LAND 2024-11-13 19,440,000   L   0 0    
BUILDING 2024-11-13 6,560,000 614,330 SL 39.000000000000 21,026 21,026    

TY 2024 InvestmentsLandSchedule2
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Category/ Item Cost/Other Basis Accumulated Depreciation Book Value End of Year Fair Market Value
LAND 19,440,000 0 19,440,000 18,669,877
BUILDING 6,560,000 635,356 5,924,644 6,268,317

TY 2024 InvestmentsOtherSchedule2
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Category/ Item Listed at Cost or FMV Book Value End of Year Fair Market Value
PAYDEN FUNDS MUTUAL FUNDS FMV 25,421,753 25,421,753

TY 2024 LegalFeesSchedule
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
LEGAL FEES 121,421 60,710   0


TY 2024 OtherExpensesSchedule
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Description Revenue and Expenses per Books Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
DUES AND SUBSCRIPTIONS 398 0   0
INVESTMENT MANAGEMENT FEES 6,250 6,250   0
FEES AND NOTARY COSTS 101 0   0


TY 2024 OtherLiabilitiesSchedule
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Description Beginning of Year - Book Value End of Year - Book Value
PLEDGES PAYABLE 5,000,000 5,000,000
SECURITY DEPOSITS 0 122,700


TY 2024 OtherProfessionalFeesSchedule
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
CONSULTING FEES 4,500 4,500   0


TY 2024 TaxesSchedule
Name:
ARRILLAGA FOUNDATION
EIN:
94-2460896
Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
STATE TAX 200 0   0
FEDERAL INCOME TAXES 130,000 0   0