2026-08-11T15:40:57-05:00 2025-09-30 042571780 AAFCPAS INC 50 WASHINGTON STREET WESTBOROUGH MA 01581 990 2024-10-01 041105450 THE BOSTON LIBRARY SOCIETY BOST 6172270270 10 12 BEACON STREET BOSTON MA 02108 F JAVIER CEVALLOS TREASURER 6172270270 2026-08-11 1 1 THOMAS F MULDOON CPA P01561688 5083669100 2026-08-11 2024 2025-03-06 01:10:19Z LEAH ROSOVSKY 10 1/2 BEACON STREET BOSTON MA 02108 207877 0 X WWW.BOSTONATHENAEUM.ORG X 1794 MA THE BOSTON LIBRARY SOCIETY ALLOCATES FUNDS TO THE BOSTON ATHENAEUM, A TAX-EXEMPT ORGANIZATION. 10 10 0 10 0 0 0 0 0 0 38495 51945 0 0 38495 51945 54759 54759 0 0 0 0 0 0 0 0 0 54759 54759 -16264 -2814 1190664 1305070 0 0 1190664 1305070 X SEE SCHEDULE O.THE BOSTON LIBRARY SOCIETY ALLOCATES FUNDS TO THE BOSTON ATHENAEUM, A TAX-EXEMPT ORGANIZATION. THE BOSTON ATHENAEUM IS AN INDEPENDENT LIBRARY COMMITTED TO MAINTAINING AND AUGMENTING ITS SIGNIFICANT COLLECTIONS OF HISTORY, LITERATURE AND ART; TO SERVING A BROAD COMMUNITY OF SCHOLARS AS A CENTER FOR RESEARCH; TO SERVING ITS MEMBERSHIP AND THE PUBLIC NOT ONLY THROUGH ITS CIRCULATING AND REFERENCE COLLECTIONS BUT ALSO THROUGH LECTURES, EXHIBITIONS AND PUBLICATIONS; AND TO PRESERVING AND ENHANCING ITS NATIONAL HISTORIC LANDMARK BUILDING. 0 0 54759 54759 THE BOSTON LIBRARY SOCIETY ALLOCATES FUNDS TO THE BOSTON ATHENAEUM, A TAX-EXEMPT ORGANIZATION. THE BOSTON ATHENAEUM IS AN INDEPENDENT LIBRARY COMMITTED TO MAINTAINING AND AUGMENTING ITS SIGNIFICANT COLLECTIONS OF HISTORY, LITERATURE AND ART; TO SERVING A BROAD COMMUNITY OF SCHOLARS AS A CENTER FOR RESEARCH; TO SERVING ITS MEMBERSHIP AND THE PUBLIC NOT ONLY THROUGH ITS CIRCULATING AND REFERENCE COLLECTIONS BUT ALSO THROUGH LECTURES, EXHIBITIONS AND PUBLICATIONS; AND TO PRESERVING AND ENHANCING ITS NATIONAL HISTORIC LANDMARK BUILDING. 54759 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 X 10 10 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 1 1 0 0 0 MA X X CHRISTOPHER J BOUDROT 6172270270 10 1/2 BEACON STREET BOSTON MA 02108 ARTHUR B PAGE SECRETARY 2.00 2.00 X X 0 0 0 F JAVIER CEVALLOS TREASURER 2.00 2.00 X X 0 0 0 EARL M COLLIER JR TRUSTEE 2.00 2.00 X 0 0 0 ROGER HAYNES TRUSTEE 2.00 2.00 X 0 0 0 AUSTIN V SHAPARD TRUSTEE 2.00 2.00 X 0 0 0 CREELEA HENDERSON PANGARO TRUSTEE 2.00 2.00 X 0 0 0 AMY RYAN TRUSTEE 2.00 2.00 X 0 0 0 MELISSA FETTER TRUSTEE 2.00 2.00 X 0 0 0 SUSAN WEATHERBIE TRUSTEE 2.00 2.00 X 0 0 0 TIMOTHY W DIGGINS TRUSTEE 2.00 2.00 X 0 0 0 LEAH ROSOVSKY DIRECTOR 2.00 35.00 X 0 362733 30675 CHRISTOPHER J BOUDROT DIRECTOR OF FINANCE 2.00 35.00 X 0 180811 39466 0 543544 70141 0 0 1 0 0 26194 26194 181683 155932 25751 25751 25751 51945 0 0 51945 54759 54759 54759 54759 0 0 1190664 1305070 1190664 1305070 0 0 X 799901 877017 390763 428053 1190664 1305070 1190664 1305070 -2814 117220 0 X X 0 1 X 1 0 X X 1 PROPRIETORS OF THE BOSTON ATHENAEUM 042104852 7 1 54759 0 1 54759 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 X PART X, LINE 2: THE ORGANIZATION ACCOUNTS FOR UNCERTAINTY IN INCOME TAXES IN ACCORDANCE WITH ASC TOPIC, INCOME TAXES. THIS STANDARD CLARIFIES THE ACCOUNTING FOR UNCERTAINTY IN TAX POSITIONS AND PRESCRIBES A RECOGNITION THRESHOLD AND MEASUREMENT ATTRIBUTE FOR THE CONSOLIDATED FINANCIAL STATEMENTS REGARDING A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN. THE ORGANIZATION HAS DETERMINED THAT THERE ARE NO UNCERTAIN TAX POSITIONS WHICH QUALIFY FOR EITHER RECOGNITION OR DISCLOSURE IN THE CONSOLIDATED FINANCIAL STATEMENTS AT SEPTEMBER 30, 2025. 1 PROPRIETORS OF THE BOSTON ATHENAEUM 10 1/2 BEACON STREET BOSTON MA 02108 042104852 501(C)(3) 54759 0 GENERAL GRANT 1 PART I, LINE 2: THE BOSTON LIBRARY SOCIETY IS A SUPPORTING ORGANIZATION. IT MAKES GRANTS TO ITS SUPPORTED ORGANIZATION, PROPRIETORS OF THE BOSTON ATHENAEUM. 0 0 0 0 0 0 0 0 0 LEAH ROSOVSKY DIRECTOR 0 362733 0 0 0 0 0 29160 0 1515 0 393408 0 0 CHRISTOPHER J BOUDROT DIRECTOR OF FINANCE 0 180811 0 0 0 0 0 15045 0 24421 0 220277 0 0 PART I, LINE 3 ALL COMPENSATION IS PAID BY RELATED ORGANIZATION PROPRIETORS OF THE BOSTON ATHENAEUM. EACH YEAR, THE TRUSTEES OF PROPRIETORS OF THE BOSTON ATHENAEUM EVALUATE THE COMPENSATION OF THE EXECUTIVE DIRECTOR OBJECTIVELY, TAKING INTO ACCOUNT COMPENSATION PAID BY SIMILAR ORGANIZATIONS FOR FUNCTIONALLY COMPARABLE POSITIONS. FORM 990, PART VI, SECTION B, LINE 11B PRIOR TO FILING FORM 990, A SPECIAL MEETING OF THE AUDIT & RISK COMMITTEE OF THE BOSTON ATHENAEUM, WHO IS DELEGATED AUTHORITY TO APPROVE THE RETURN, WAS HELD. THE RETURN WAS PRESENTED BY THE DIRECTOR OF FINANCE, WHO WAS AVAILABLE TO ANSWER QUESTIONS AND TO CERTIFY THE ACCURACY OF INFORMATION PROVIDED ON THE RETURN. THE COMMITTEE VOTED TO APPROVE THE RETURN BASED ON EXAMINATION OF THE RETURN AND CERTIFICATIONS MADE BY THE DIRECTOR OF FINANCE. A COMPLETE COPY OF THE FORM 990 WAS PROVIDED TO THE ENTIRE BOARD VIA EMAIL, PRIOR TO FILING. FORM 990, PART VI, SECTION B, LINE 12C THE ORGANIZATION MAINTAINS A WRITTEN CONFLICTS-OF-INTEREST POLICY. THE POLICY REQUIRES OFFICERS, DIRECTORS, TRUSTEES AND KEY EMPLOYEES TO COMPLETE AN ANNUAL CONFLICTS-OF-INTEREST DISCLOSURE STATEMENT. THE STATEMENTS ARE DISCUSSED AND CONSIDERED PER THE POLICY AT A MEETING OF THE BOARD OF TRUSTEES. FORM 990, PART VI, SECTION C, LINE 19 THE SOCIETY'S BYLAWS AND CONFLICT OF INTEREST POLICY ARE AVAILABLE FOR REVIEW UPON REQUEST. THE COMPLETE AUDITED FINANCIAL STATEMENTS ARE AVAILABLE ON THE ATHENAEUM'S WEBSITE: HTTP://WWW.BOSTONATHENAEUM.ORG. THE FORM 990 AND AUDITED FINANCIAL STATEMENTS ARE ALSO AVAILABLE VIA THE MASSACHUSETTS ATTORNEY GENERAL'S WEBSITE. FORM 990, PART XII, LINE 2C: THE ORGANIZATION HAS A COMMITTEE THAT ASSUMES RESPONSIBILITY FOR OVERSIGHT OF THE AUDIT OF ITS FINANCIAL STATEMENTS AND SELECTION OF AN INDEPENDENT ACCOUNTANT. PROPRIETORS OF THE BOSTON ATHENAEUM 10 1/2 BEACON STREET BOSTON MA 02108 042104852 INDEPENDENT LIBRARY SERVING A BROAD COMMUNITY AS A CENTER FOR RESEARCH MA 501(C)(3) LINE 7 N/A 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0