Form990-PF

Department of the Treasury
Internal Revenue Service
Return of Private Foundation
or Section 4947(a)(1) Nonexempt Charitable Trust
Treated as a Private Foundation
Note. The foundation may be able to use a copy of this return to satisfy state reporting requirements.
OMB No. 1545-0052
2010
For calendar year 2010, or tax year beginning 10-01-2010 , and ending 09-30-2011
G
Check all that apply:
Name of foundation
THE CLAY MATHEMATICS INSTITUTE INC
 

Number and street (or P.O. box number if mail is not delivered to street address)ONE BOW STREET   Room/suite
City or town, state, and ZIP code
CAMBRIDGE, MA02138
A Employer identification number

13-4025978
B Telephone number (see page 10 of the instructions)

(617) 995-2600
C bullet
D 1. bullet
H Check type of organization:
2. bullet
I Fair market value of all assets at end
of year (from Part II, col. (c),
line 16)bullet$58,859,317J Accounting method:
 
(Part I, column (d) must be on cash basis.)
E bullet
F bullet
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 page 11 of the 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) 0
2 Check bullet
3 Interest on savings and temporary cash investments 2,434 2,434 2,434
4 Dividends and interest from securities...... 357,052 357,052 357,052
5a Gross rents..............      
b Net rental income or (loss)  
6a Net gain or (loss) from sale of assets not on line 10 -437,088
b Gross sales price for all assets on line 6a 1,230,020
7 Capital gain net income (from Part IV, line 2)...  
8 Net short-term capital gain.........  
9 Income modifications...........  
10a Gross sales less returns and allowances 2,233
b Less: Cost of goods sold....  
c Gross profit or (loss) (attach schedule)..... 2,233 2,233
11 Other income (attach schedule)....... Click to see attachment 17,349   17,349
12 Total. Add lines 1 through 11........ -58,020 359,486 379,068
Operating and Administrative Expenses 13 Compensation of officers, directors, trustees, etc. 320,000 0 0 320,000
14 Other employee salaries and wages...... 915,000 0 0 915,000
15 Pension plans, employee benefits....... 101,714 0 0 101,714
16a Legal fees (attach schedule)......... Click to see attachment 1,492 0 0 1,492
b Accounting fees (attach schedule)....... Click to see attachment 37,825 0 0 37,825
c Other professional fees (attach schedule).... Click to see attachment 284,271 152,600 0 131,671
17 Interest...............        
18 Taxes (attach schedule) (see page 14 of the instructions) Click to see attachment 120,755 0 0 90,755
19 Depreciation (attach schedule) and depletion... Click to see attachment 24,104 0 0
20 Occupancy.............. 454,789 0 0 454,789
21 Travel, conferences, and meetings....... 201,347 0 0 201,347
22 Printing and publications.......... 29,663 0 0 29,663
23 Other expenses (attach schedule)....... Click to see attachment 162,742 0 0 162,742
24 Total operating and administrative expenses.
Add lines 13 through 23.......... 2,653,702 152,600 0 2,446,998
25 Contributions, gifts, grants paid........ 50,000 50,000
26 Total expenses and disbursements. Add lines 24 and 25 2,703,702 152,600 0 2,496,998
27 Subtract line 26 from line 12:
a Excess of revenue over expenses and disbursements -2,761,722
b Net investment income (if negative, enter -0-) 206,886
c Adjusted net income (if negative, enter -0-)... 379,068
For Privacy Act and Paperwork Reduction Act Notice, see page 30 of the instructions.
Cat. No. 11289X Form 990-PF (2010)
Form 990-PF (2010)
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............... 435,176 625,024 625,024
2 Savings and temporary cash investments.......... 21,652,787 20,156,052 20,156,052
3 Accounts receivable bullet  
Less: allowance for doubtful accounts bullet        
4 Pledges receivable bullet  
Less: allowance for doubtful accounts bullet        
5 Grants receivable.................      
6 Receivables due from officers, directors, trustees, and other
disqualified persons (attach schedule) (see page 15 of the
instructions)....................      
7 Other notes and loans receivable (attach schedule) bullet  
Less: allowance for doubtful accounts bullet        
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)........ 42,141,785 Click to see attachment38,046,501 38,046,501
c Investments—corporate bonds (attach schedule)........      
11 Investments—land, buildings, and equipment: basis bullet  
Less: accumulated depreciation (attach schedule) bullet        
12 Investments—mortgage loans..............      
13 Investments—other (attach schedule)...........      
14 Land, buildings, and equipment: basis bullet1,227,778
Less: accumulated depreciation (attach schedule) bullet1,196,038 50,674 Click to see attachment31,740 31,740
15 Other assets (describe bullet)      
16 Total assets (to be completed by all filers—see the
instructions. Also, see page 1, item I) 64,280,422 58,859,317 58,859,317
Liabilities 17 Accounts payable and accrued expenses.......... 0 0
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 bullet)    
23 Total liabilities (add lines 17 through 22).......... 0 0
Net Assets or Fund Balances bullet
and complete lines 24 through 26 and lines 30 and 31.
24 Unrestricted.................... 64,280,422 58,859,317
25 Temporarily restricted................    
26 Permanently restricted................    
bullet
and complete lines 27 through 31.
27 Capital stock, trust principal, or current funds.........    
28 Paid-in or capital surplus, or land, bldg., and equipment fund    
29 Retained earnings, accumulated income, endowment, or other funds    
30 Total net assets or fund balances (see page 17 of the
instructions).................... 64,280,422 58,859,317
31 Total liabilities and net assets/fund balances (see page 17 of
the instructions).................. 64,280,422 58,859,317
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 30 (must agree
with end-of-year figure reported on prior year’s return)............... 1 64,280,422
2 Enter amount from Part I, line 27a...................... 2 -2,761,722
3 Other increases not included in line 2 (itemize) bullet 3  
4 Add lines 1, 2, and 3.......................... 4 61,518,700
5 Decreases not included in line 2 (itemize) bulletClick to see attachment 5 2,659,383
6 Total net assets or fund balances at end of year (line 4 minus line 5)—Part II, column (b), line 30.. 6 58,859,317
Form 990-PF (2010)
Form 990-PF (2010)
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 ROPER INDS INC P 2007-02-06 2010-10-01
b AKAMAI TECH P 2007-02-06 2011-01-20
c WILMINGTON TRUST CO P 2010-07-02 2010-12-30
d WILMINGTON TRUST CO P 2010-07-08 2010-12-30
e WILMINGTON TRUST CO-M&T BANK P 2007-07-21 2011-05-16
AMERICAN BONANZA GOLD P 2007-05-08 2011-02-15
M&T BANK WILMINGTON TRUST CO P 2010-07-02 2011-07-01
(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 79,202   61,490 17,712
b 693,957   758,491 -64,534
c 75,592   194,299 -118,707
d 59,924   164,635 -104,711
e 11     11
187,345   130,450 56,895
133,989   357,743 -223,754
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       17,712
b       -64,534
c       -118,707
d       -104,711
e       11
      56,895
      -223,754
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 -437,088
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 pages 13 and 17 of the instructions).
If (loss), enter -0- in Part I, line 8 . . . . . . . . . . . . . 		Bracket 3 -447,161
Part V
Qualification Under Section 4940(e) for Reduced Tax on Net Investment Income
(For optional use by domestic private foundations subject to the section 4940(a) tax on net investment income.)

If section 4940(d)(2) applies, leave this part blank.
Was the foundation liable for the section 4942 tax on the distributable amount of any year in the base period?
If “Yes,” the foundation does not qualify under section 4940(e). Do not complete this part.
1 Enter the appropriate amount in each column for each year; see page 18 of the instructions before making any entries.
(a)
Base period years Calendar
year (or tax year beginning in) 		(b)
Adjusted qualifying distributions 		(c)
Net value of noncharitable-use assets 		(d)
Distribution ratio
(col. (b) divided by col. (c))
2009 3,474,244 62,210,371 0.055847
2008 7,180,193 54,679,718 0.131314
2007 4,276,148 77,155,599 0.055422
2006 10,928,494 80,732,442 0.135367
2005 3,900,897 88,215,505 0.04422
2 Total of line 1, column (d) ...................... 2 0.42217
3 Average distribution ratio for the 5-year base period—divide the total on line 2 by 5, or by
the number of years the foundation has been in existence if less than 5 years. . . 		3 0.084434
4 Enter the net value of noncharitable-use assets for 2010 from Part X, line 5..... 4 66,055,877
5 Multiply line 4 by line 3....................... 5 5,577,362
6 Enter 1% of net investment income (1% of Part I, line 27b)........... 6 2,069
7 Add lines 5 and 6......................... 7 5,579,431
8 Enter qualifying distributions from Part XII, line 4.............. 8 2,502,167
If line 8 is equal to or greater than line 7, check the box in Part VI, line 1b, and complete that part using a 1% tax rate. See
the Part VI instructions on page 18.
Form 990-PF (2010)
Form 990-PF (2010)
Page 4
Part VI
Excise Tax Based on Investment Income (Section 4940(a), 4940(b), 4940(e), or 4948—see page 18 of the instructions)
1a Bulletand enter “N/A” on line 1. Bracket
Date of ruling or determination letter:   (attach copy of letter if necessary–see instructions)
b 1 4,138
hereBulletand enter 1% of Part I, line 27b...................
c All other domestic foundations enter 2% of line 27b. Exempt foreign organizations enter 4% 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  
3 Add lines 1 and 2............................ 3 4,138
4 Subtitle A (income) tax (domestic section 4947(a)(1) trusts and taxable foundations only. Others enter -0-). 4  
5 Tax based on investment income. Subtract line 4 from line 3. If zero or less, enter -0- ..... 5 4,138
6 Credits/Payments:
a 2010 estimated tax payments and 2009 overpayment credited to 2010 6a 21,160
b Exempt foreign organizations—tax withheld at source....... 6b
c Tax paid with application for extension of time to file (Form 8868) 6c  
d Backup withholding erroneously withheld ........... 6d  
7 Total credits and payments. Add lines 6a through 6d.............. 7 21,160
8 Enter any penalty for underpayment of estimated tax. if Form 2220 is attached. 8  
9 Tax due. If the total of lines 5 and 8 is more than line 7, enter amount owed.......Bullet 9  
10 Overpayment. If line 7 is more than the total of lines 5 and 8, enter the amount overpaid...Bullet 10 17,022
11 Enter the amount of line 10 to be: Credited to 2011 estimated taxBullet17,022 Refunded Bullet 11  
Part VII-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 page 19 of
the instructions for 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. bullet$   (2) On foundation managers.bullet$  
e
Enter the reimbursement (if any) paid by the foundation during the year for political expenditure tax imposed
on foundation managers.bullet$  
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:
  • By language in the governing instrument, or
  • 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 XV.
    7
    Yes
     
    8a
    Enter the states to which the foundation reports or with which it is registered (see page 19 of the
    instructions)bulletDE, MA
    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 2010 or the taxable year beginning in 2010 (see instructions for Part XIV on
    page 27)? If “Yes,” complete Part XIV...........................
    9
    Yes
     
    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 page 20 of the instructions) .......
    11
     
    No
    12
    Did the foundation acquire a direct or indirect interest in any applicable insurance contract before August 17, 2008?
    12
     
    No
    13
    Did the foundation comply with the public inspection requirements for its annual returns and exemption application?
    13
    Yes
     
    Website addressbulletclaymath.org
    14
    The books are in care ofbulletTHE CORPORATION Telephone no.bullet (617) 995-2600
    Located atbulletONE BOW STREETCambridgeMA ZIP+4bullet02138
    15
    Section 4947(a)(1) nonexempt charitable trusts filing Form 990-PF in lieu of Form 1041.........bullet
    and enter the amount of tax-exempt interest received or accrued during the year ......bullet
    15  
    16
    At any time during calendar year 2010, did the foundation have an interest in or a signature or other authority over
    a bank, securities, or other financial account in a foreign country? .................
    16
     
    No
    See page 20 of the instructions for exceptions and filing requirements for Form TD F 90-22.1. If "Yes", enter the name of the foreign country bullet  
    Form 990-PF (2010)
    Form 990-PF (2010)
    Page 5
    Part VII-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?
    (2) Borrow money from, lend money to, or otherwise extend credit to (or accept it from)
    a disqualified person?.........................
    (3) Furnish goods, services, or facilities to (or accept them from) a disqualified person?
    (4) Pay compensation to, or pay or reimburse the expenses of, a disqualified person?
    (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)?.................
    (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.).........
    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 page 20 of the instructions)?...
    1b
     
    No
    .........bullet
    c
    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 2010?.............
    1c
     
    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 2010, did the foundation have any undistributed income (lines 6d
    and 6e, Part XIII) for tax year(s) beginning before 2010?...............
    If “Yes,” list the years bullet20, 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 page 20 of the 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.
    bullet20, 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?.....................
    b
    If “Yes,” did it have excess business holdings in 2010 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 2010.)....................
    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 2010?
    4b
     
    No
    5a
    During the year did the foundation pay or incur any amount to:
    (1) Carry on propaganda, or otherwise attempt to influence legislation (section 4945(e))?
    (2) Influence the outcome of any specific public election (see section 4955); or to carry
    on, directly or indirectly, any voter registration drive?...............
    (3) Provide a grant to an individual for travel, study, or other similar purposes?
    (4) Provide a grant to an organization other than a charitable, etc., organization described
    in section 509(a)(1), (2), or (3), or section 4940(d)(2)? (see page 22 of the instructions)...
    (5) Provide for any purpose other than religious, charitable, scientific, literary, or
    educational purposes, or for the prevention of cruelty to children or animals?........
    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 page 22 of the instructions)?
    5b
     
     
    .........bullet
    c
    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?............
    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?....................
    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?
    b
    If yes, did the foundation receive any proceeds or have any net income attributable to the transaction? ....
    7b
     
    No
    Form 990-PF (2010)
    Form 990-PF (2010)
    Page 6
    Part VIII
    Information About Officers, Directors, Trustees, Foundation Managers, Highly Paid Employees,
    and Contractors
    1 List all officers, directors, trustees, foundation managers and their compensation (see page 22 of the 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
    JAMES CARLSON PRESIDENT
    40.0     		245,000 35,601 0
    ONE BOW STREET
    CAMBRIDGE,MA02138
    LANDON D CLAY TREASURER/DIRECTOR
    5.0     		0 0 0
    ONE BOW STREET
    CAMBRIDGE,MA02138
    LAVINIA D CLAY SECRETARY/DIRECTOR
    5.0     		0 0 0
    ONE BOW STREET
    CAMBRIDGE,MA02138
    THOMAS M CLAY DIRECTOR
    5.0     		0 0 0
    ONE BOW STREET
    CAMBRIDGE,MA02138
    Brian James CHIEF ADMIN OFFICER
    40.0     		75,000 3,174 0
    ONE BOW STREET
    CAMBRIDGE,MA02138
    2 Compensation of five highest-paid employees (other than those included on line 1—see page 23 of the 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
    DAVID ELLWOOD RESEARCH DIRECTOR
    40.0     		109,083 21,310 0
    131 ST BOTOLPH STREET
    BOSTON,MA02155
    MOHAMMED ABOUZAID RESEARCH FELLOW
    40.0     		90,000 41,293 0
    632 MASSACHUSETTS AVE
    CAMBRIDGE,MA02139
    DAVESH MAULIK RESEARCH FELLOW
    40.0     		90,000 12,566 0
    114 WESTERN AVEENUE
    CAMBRIDGE,MA02139
    SUCHARIT SARKAR RESEARCH FELLOW
    40.0     		90,000 11,885 0
    438 W 116 STREET
    NEW YORK,NY10027
    TIM AUSTIN RESEARCH FELLOW
    40.0     		90,000 5,160 0
    ONE BOW STREET
    CAMBRIDGE,MA02138
    Total number of other employees paid over $50,000...................bullet 4
    3 Five highest-paid independent contractors for professional services (see page 23 of the instructions). If none, enter "NONE".
    (a) Name and address of each person paid more than $50,000 (b) Type of service (c) Compensation
    VIDA SALAHI PUBLICATIONS & INT 62,206
    ONE BOW STREET
    CAMBRIDGE,MA02138
    Total number of others receiving over $50,000 for professional services.............bullet  
    Part IX-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 CREATE NEW MATHEMATICAL KNOWLEDGE UTILIZING CMI PRIZE FELLOWS AND CMI SCHOLARS TO PERFORM CREATIVE MATHEMATICAL RESEARCH. 1,954,806
    2 DISSEMINATE MATHEMATICAL INSIGHT BY ORGANIZING WORKSHOPS, CONFERENCES, LECTURE SERIES, AND SUMMER SCHOOLS TO BRING MATHEMATICAL DEVELOPMENTS TO THE ATTENTION OF OTHERS. 367,325
    3 INSPIRE TALENTED STUDENTS IN PARTNERSHIP WITH OTHER INSTITUTIONS, RUN SUMMER PROGRAMS, AND ENCOURAGE OUTSTANDING STUDENTS TO PURSUE CAREERS IN MATHEMATICS. 124,869
    4  
    Form 990-PF (2010)
    Form 990-PF (2010)
    Page 7
    Part IX-B
    Summary of Program-Related Investments (see page 23 of the 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 page 24 of the instructions.
    3  
    Total. Add lines 1 through 3...........................bullet  
    Part X
    Minimum Investment Return (All domestic foundations must complete this part. Foreign foundations,
    see page 24 of the 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
    66,584,633
    b
    Average of monthly cash balances.......................
    1b
    477,171
    c
    Fair market value of all other assets (see page 24 of the instructions)............
    1c
    0
    d
    Total (add lines 1a, b, and c).........................
    1d
    67,061,804
    e
    Reduction claimed for blockage or other factors reported on lines 1a and
    1c (attach detailed explanation) ..............
    1e
     
    2
    Acquisition indebtedness applicable to line 1 assets..................
    2
    0
    3
    Subtract line 2 from line 1d..........................
    3
    67,061,804
    4
    Cash deemed held for charitable activities. Enter 1 1⁄2% of line 3 (for greater amount, see page 25
    of the instructions) ............................
    4
    1,005,927
    5
    Net value of noncharitable-use assets. Subtract line 4 from line 3. Enter here and on Part V, line 4
    5
    66,055,877
    6
    Minimum investment return. Enter 5% of line 5...................
    6
    3,302,794
    Part XI
    Distributable Amount bullet and do not complete this part.)
    1
    Minimum investment return from Part X, line 6....................
    1
     
    2a
    Tax on investment income for 2010 from Part VI, line 5......
    2a
     
    b
    Income tax for 2010. (This does not include the tax from Part VI.)...
    2b
     
    c
    Add lines 2a and 2b............................
    2c
     
    3
    Distributable amount before adjustments. Subtract line 2c from line 1............
    3
     
    4
    Recoveries of amounts treated as qualifying distributions................
    4
     
    5
    Add lines 3 and 4.............................
    5
     
    6
    Deduction from distributable amount (see page 25 of the instructions)...........
    6
     
    7
    Distributable amount as adjusted. Subtract line 6 from line 5. Enter here and on Part XIII,
    line 1.................................
    7
     
    Part XII
    Qualifying Distributions (see page 25 of the 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
    2,496,998
    b
    Program-related investments—total from Part IX-B..................
    1b
    0
    2
    Amounts paid to acquire assets used (or held for use) directly in carrying out charitable, etc.,
    purposes................................
    2
    5,169
    3
    Amounts set aside for specific charitable projects that satisfy the:
    a
    Suitability test (prior IRS approval required)....................
    3a
    0
    b
    Cash distribution test (attach the required schedule) .................
    3b
    0
    4
    Qualifying distributions. Add lines 1a through 3b. Enter here and on Part V, line 8, and Part XIII, line 4
    4
    2,502,167
    5
    Foundations that qualify under section 4940(e) for the reduced rate of tax on net investment
    income. Enter 1% of Part I, line 27b (see page 26 of the instructions)............
    5
     
    6
    Adjusted qualifying distributions. Subtract line 5 from line 4...............
    6
    2,502,167
    Note: The amount on line 6 will be used in Part V, column (b), in subsequent years when calculating whether the foundation qualifies for
    the section 4940(e) reduction of tax in those years.
    Form 990-PF (2010)
    Form 990-PF (2010)
    Page 8
    Part XIII
    Undistributed Income (see page 26 of the instructions)
    (a)
    Corpus     		(b)
    Years prior to 2009     		(c)
    2009     		(d)
    2010
    1 Distributable amount for 2010 from Part XI, line 7 0
    2 Undistributed income, if any, as of the end of 2010:
    a Enter amount for 2009 only....... 0
    b Total for prior years:2008, 2007, 2006  
    3 Excess distributions carryover, if any, to 2010:
    a From 2005....... 0
    b From 2006....... 0
    c From 2007....... 0
    d From 2008....... 0
    e From 2009....... 0
    fTotal of lines 3a through e......... 0
    4Qualifying distributions for 2010 from Part
    XII, line 4: bullet$ 2,502,167
    a Applied to 2009, but not more than line 2a 0
    b Applied to undistributed income of prior years
    (Election required—see page 26 of the instructions)    		  
    c Treated as distributions out of corpus (Election
    required—see page 26 of the instructions)...     		 
    d Applied to 2010 distributable amount.....  
    e Remaining amount distributed out of corpus 2,502,167
    5 Excess distributions carryover applied to 2010.    
    (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 2,502,167
    b Prior years’ undistributed income. Subtract
    line 4b from line 2b ...........     		 
    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......     		 
    d Subtract line 6c from line 6b. Taxable
    amount—see page 27 of the instructions ...     		 
    e Undistributed income for 2009. Subtract line
    4a from line 2a. Taxable amount—see page 27
    of the instructions ...........     		0
    f Undistributed income for 2010. Subtract
    lines 4d and 5 from line 1. This amount must
    be distributed in 2011 ..........     		0
    7 Amounts treated as distributions out of
    corpus to satisfy requirements imposed by
    section 170(b)(1)(F) or 4942(g)(3) (see page 27
    of the instructions) ...........     		 
    8Excess distributions carryover from 2005 not
    applied on line 5 or line 7 (see page 27 of the
    instructions) .............     		0
    9Excess distributions carryover to 2011.
    Subtract lines 7 and 8 from line 6a ......     		0
    10 Analysis of line 9:
    a Excess from 2006....  
    b Excess from 2007.... 0
    c Excess from 2008.... 0
    d Excess from 2009.... 0
    e Excess from 2010.... 0
    Form 990-PF (2010)
    Form 990-PF (2010)
    Page 9
    Part XIV
    Private Operating Foundations (see page 27 of the instructions and Part VII-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 2010, enter the date of the ruling.......bullet
     
    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 X for each
    year listed ..........     		Tax year Prior 3 years (e) Total
    (a) 2010 (b) 2009 (c) 2008 (d) 2007
    379,068 280,905 1,649,861 818,840 3,128,674
    b 85% of line 2a ......... 322,208 238,769 1,402,382 696,014 2,659,373
    c Qualifying distributions from Part XII,
    line 4 for each year listed .....     		2,502,167 3,474,244 7,190,638 4,276,148 17,443,197
    d Amounts included in line 2c not used directly
    for active conduct of exempt activities ....     		85,000 0 3,728,000 55,000 3,868,000
    e Qualifying distributions made directly
    for active conduct of exempt activities.
    Subtract line 2d from line 2c ....     		2,417,167 3,474,244 3,462,638 4,221,148 13,575,197
    3 Complete 3a, b, or c for the
    alternative test relied upon:
    a “Assets” alternative test—enter:
    (1) Value of all assets ...... 58,859,317 64,280,423 73,478,097 92,923,215 289,541,052
    (2) Value of assets qualifying
    under section 4942(j)(3)(B)(i)    		         0
    b “Endowment” alternative test— enter 2⁄3
    of minimum investment return shown in
    Part X, line 6 for each year listed...     		2,201,865 2,073,679 1,822,657 2,571,853 8,670,054
    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) ....     		        0
    (2) Support from general public
    and 5 or more exempt
    organizations as provided in
    section 4942(j)(3)(B)(iii)....     		        0
    (3) Largest amount of support
    from an exempt organization    		         0
    (4) Gross investment income         0
    Part XV
    Supplementary Information (Complete this part only if the organization had $5,000 or more in
    assets at any time during the year—see page 27 of the 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).)
    LANDON T CLAY
    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.
    NONE
    2Information Regarding Contribution, Grant, Gift, Loan, Scholarship, etc., Programs:
    Check here bullet
    aThe name, address, and telephone number 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 (2010)
    Form 990-PF (2010)
    Page 10
    Part XV
    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
    President Fellows of Harvard College
    124 Mount Auburn Street
    Cambridge,MA021385795     		not related 501(c)(3) Harvard University Math Department Renovation Project 50,000
    Total .................................bullet 3a 50,000
    bApproved for future payment
    Total ..................................bullet 3b  
    Form 990-PF (2010)
    Form 990-PF (2010)
    Page 11
    Part XVI-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 page 28 of
    the 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....          
    3Interest on savings and temporary cash investments     14 2,434  
    4 Dividends and interest from securities....     14 357,052  
    5 Net rental income or (loss) from real estate:
    aDebt-financed property......          
    bNot debt-financed property.....          
    6Net rental income or (loss) from personal property          
    7 Other investment income.....          
    8Gain or (loss) from sales of assets other than inventory     18 -437,088  
    9 Net income or (loss) from special events:          
    10 Gross profit or (loss) from sales of inventory..          
    11 Other revenue: aSALES OF BOOKS, VIDEOS & POSTERS         2,233
    bOTHER INCOME         7,160
    cROYALTIES     15 10,189  
    d
    e
    12 Subtotal. Add columns (b), (d), and (e)..   -67,413 9,393
    13Total. Add line 12, columns (b), (d), and (e)...................
    13-58,020
    (See worksheet in line 13 instructions on page 28 to verify calculations.)
    Part XVI-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 XVI-A contributed importantly to
    the accomplishment of the organization’s exempt purposes (other than by providing funds for such purposes). (See
    page 28 of the instructions.)
    Form 990-PF (2010)
    Form 990-PF (2010)
    Page 12
    Part XVII
    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
    Yes
    No
    501(c) of the Code (other than section 501(c)(3) organizations) or in section 527, relating to political organizations?
    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) of the Code (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
    SignHere
    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 or fiduciary) is based on all information of which preparer has any knowledge.
    Bullet Bullet
    Signature of officer or trustee Date Title
    PaidPreparersUseOnly Preparer's SignatureBullet Date PTIN
    Firm's namebullet



    Firm's addressbullet







         		Firm's EINbullet
    Phone no.
    Form 990-PF (2010)
    Additional Data


    Software ID:  
    Software Version:  


    Form 990PF - Special Condition Description:
    Special Condition Description

    TY 2010 AccountingFeesSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
    WOLF & COMPANY 37,825 0 0 37,825

    Note: To capture the full content of this document, please select landscape mode (11" x 8.5") when printing.

    TY 2010 DepreciationSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    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

    TY 2010 InvestmentsCorpStockSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Name of Stock End of Year Book Value End of Year Fair Market Value
    THROMBOGENICS NV 25,338,083 25,338,083
    INTERNATIONAL EQUITIES 1,256,108 1,256,108
    DOMESTIC EQUITIES 11,429,311 11,429,311
    DOMESTIC MUTUAL FUNDS 22,999 22,999

    TY 2010 LandEtcSchedule2
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Category / Item Cost / Other Basis Accumulated Depreciation Book Value End of Year Fair Market Value


    TY 2010 LegalFeesSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
    LEGAL FEES 1,492 0 0 1,492


    TY 2010 OtherDecreasesSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Description Amount
    NET UNREALIZED LOSSES 2,659,383


    TY 2010 OtherExpensesSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Description Revenue and Expenses per Books Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
    BANK SERVICE CHARGES 735 0 0 735
    ADVISORY BOARD 44,500 0 0 44,500
    INTERNET ACCESS FEES 11,157 0 0 11,157
    COMPUTER SUPPLIES & COSTS 2,307 0 0 2,307
    OFFICE SUPPPLIES 4,470 0 0 4,470
    ADVERTISING 518 0 0 518
    DUES AND SUBSCRIPTIONS 3,709 0 0 3,709
    OTHER PROGRAM EXPENSES 135 0 0 135
    PAYROLL PROCESSING FEES 3,521 0 0 3,521
    POSTAGE & DELIVERY 3,684 0 0 3,684
    SPEAKER HONORARIUM 5,750 0 0 5,750
    TELEPHONE 1,090 0 0 1,090
    VIDEO PURCHASES 1,017 0 0 1,017
    LIABILITY INSURANCE 3,755 0 0 3,755
    OTHER OFFICE EXPENSES 3,216 0 0 3,216
    EQUIPMENT RENTAL 7,402 0 0 7,402
    RENT MAILBOX 165 0 0 165
    CMI GRANT & AWARDS 35,000 0 0 35,000
    D&O INSURANCE 5,788 0 0 5,788
    CONTRACT LABOR 10,460 0 0 10,460
    COMPUTER REPAIR 14,363 0 0 14,363


    TY 2010 OtherIncomeSchedule2
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Description Revenue And Expenses Per Books Net Investment Income Adjusted Net Income
    Royalties 10,189   10,189
    Other Income 7,160   7,160


    TY 2010 OtherProfessionalFeesSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
    CONSULTANT FEES 131,671 0 0 131,671
    INVESTMENT EXPENSES 152,600 152,600 0 0


    TY 2010 SalesOfInventoryList 
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978

    Category Gross Sales Cost of Goods Sold Net (Gross Sales Minus
    Cost of Goods Sold)
    SALES OF BOOKS VIDEOS & POSTERS 2,233   2,233

    TY 2010 TaxesSchedule
    Name:
    THE CLAY MATHEMATICS INSTITUTE INC
    EIN: 13-4025978
    Category Amount Net Investment Income Adjusted Net Income Disbursements for Charitable Purposes
    PAYROLL TAXES 90,755 0 0 90,755
    FEDERAL EXCISE TAXES 30,000 0 0 0