2026-09-02T10:02:52-05:00 2025-12-31 582487348 Aprio Advisory Group LLC 111 Rockville Pike Suite 600 Rockville MD 20850 990 2025-01-01 136161070 The Society of Surgical Oncology Inc SOCI 8474271400 9525 West Bryn Mawr Avenue 870 Rosemont IL 60018 Patti Stella CEO 8474271400 2026-09-01 1 Stacy Cullen P00974308 3012316200 2026-09-01 2025 Patti Stella 9525 West Bryn Mawr Avenue 870 Rosemont IL 60018 8179210 0 X www.surgonc.org X 1940 NY Education in the field of oncology & ensure that all cancer patients receive quality care. 18 18 54 18 32768 0 1586517 1714716 5319488 5805825 305879 331123 314193 327546 7526077 8179210 150000 200000 0 0 2695121 2934999 0 0 92772 4596994 4234497 7442115 7369496 83962 809714 13166005 15510031 2573763 2925555 10592242 12584476 X The Society's purpose is to improve multidisciplinary patient care by advancing the science, education and practice of cancer surgery worldwide. 0 0 1987151 2530840 The Society sponsors an annual cancer symposium which features plenary sessions, symposia, oral presentations, debate forums, interative poster presentations, meet-the-professsor breakfasts, award presentations and more. 732989 2353322 Productions of the annals of surgical oncology, which is the official Journal of the Society of Surgical Oncology. 226799 1252411 The Society holds an annual fellows institute meeting which features didactic sessions and hands-on laboratory components. Participation in the program is reserved for fellows in sso-approved breast fellowship programs, ACGME or RCPSC-accredited surgical oncology programs, or fellowship council-accredited HPB fellowship programs. 946053 200000 506769 Other Programs 946053 200000 506769 3892992 1 1 0 0 0 0 0 0 0 0 1 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 60 0 1 54 1 1 1 0 0 0 0 0 0 0 0 0 0 0 X 18 18 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 1 1 1 1 0 IL X Myrna Asencio MBA 8474271400 9525 West Bryn Mawr Rosemont IL 60018 Ronald P DeMatteo MD FSSO Immediate Past President 3.00 X X 0 0 0 Russell S Berman MD FSSO President 3.00 X X 0 0 0 Kenneth K Tanabe MD FSSO President-Elect 3.00 X X 0 0 0 Margo Shoup MD MBA FSSO Vice President 3.00 X X 0 0 0 Herbert Zeh III MD FACS FSSO Secretary 3.00 X X 0 0 0 Tari King MD FSSO Treasurer 3.00 X X 0 0 0 Kelly K Hunt MD FSSO Past President 3.00 X X 0 0 0 Callisia Clarke MD MS FSSO Member 3.00 X 0 0 0 Ryan C Fields MD Member 3.00 X 0 0 0 Melissa Hogg MD FSSO Member 3.00 X 0 0 0 E Shelley Hwang MD MPH FSSO Member 3.00 X 0 0 0 Matthew H G Katz MD Member 3.00 X 0 0 0 Amanda Kong MD MS FACS FSSO DABS Member 3.00 X 0 0 0 Toan T Nguyen MD Community Practice Representative 3.00 X 0 0 0 Julie Hallet MD International Representative 3.00 X 0 0 0 Alexandra Gangi MD FSSO Director-at-Large 3.00 X 0 0 0 Micahel Lowe MD Director-at-Large 3.00 X 0 0 0 Mediget Teshome MD MPH FACS Director-at-Large 3.00 X 0 0 0 Anna Polyak RN JD Chief Executive Officer 40.00 X 310657 0 21748 Patricia Stella Chief Learning Officer 40.00 X 227990 0 43627 Myrna Asencio MBA Chief Financial Officer 40.00 X 214773 0 17518 Evridiki Giannopoulos Chief Growth Officer 40.00 X 190705 0 25690 Emily Butera Director, Growth and Engagement 40.00 X 127786 0 7823 Sara Nelli Assistant Director, Education 40.00 X 110825 0 23781 1182736 0 140187 6 0 1 0 Freeman 1600 Viceroy Drive Suite 100 Dallas TX 75235 Exhibitor Services 816208 Editorial Rx 3233 Eleanor Way Fort Myers FL 33917 Journal Medical Writing/Editing 404220 Aramark Sports & Entertainment Services 333 S Franklin Street Tampa FL 33602 Food & Beverage Services 256752 Marriott International 1965 Hawks Louisville TN 37777 Food & Beverage Services 127143 Meeting Management Associates PO Box 723 Sherburne NY 13460 Consultant Services 102928 6 1714716 1714716 Journal Royalties, Sti 541700 2353322 2353322 Registration and Exhib 541900 1693323 1685555 7768 Membership Dues & Appl 541900 1252411 1252411 Fellowship Matching 541900 506769 506769 5805825 331123 331123 88381 88381 Miscellaneous 900099 239165 25000 214165 239165 8179210 5798057 32768 633669 200000 200000 332405 107460 224185 760 2028146 655664 1367845 4637 97078 31384 65472 222 270897 87577 182701 619 206473 66749 139252 472 2058 2058 42063 42063 30000 30000 243247 68298 174949 80494 10899 69595 145432 74502 69109 1821 241682 132170 107925 1587 263460 263460 334521 227538 106983 2346462 2090134 181077 75251 94785 94785 26584 26584 Unrelated Business Inco 6506 6506 Strategic Plan 205524 205524 Editor-In-Chief Stipend 125000 125000 Sundry 23724 16346 7378 22955 15617 7313 25 7369496 3892992 3383732 92772 350211 472163 1416288 2788016 2500 99100 1301960 1390915 446358 457217 960176 735077 304917 225099 9000818 9846445 342953 231076 13166005 15510031 131291 204733 1982229 2408024 460243 312798 2573763 2925555 X 10592242 12584476 10592242 12584476 13166005 15510031 809714 1182520 0 X X 0 1 X 1 0 X 2141286 864460 581116 648278 1714716 5949856 4760225 5657428 6291851 6230127 5805825 28745456 6901511 6521888 6872967 6878405 7520541 34695312 14750 15000 29750 0 14750 15000 29750 34665562 190972 268097 365206 384741 419504 1628520 190972 268097 365206 384741 419504 1628520 20174 27841 54464 52600 169000 324079 61203 172771 210331 239165 683470 7112657 6879029 7465408 7526077 8348210 37331381 0.92860 0.93950 0.04360 0.04070 X RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED 364679 280263 84416 154842 105243 49599 440655 349571 91084 225099 Operating Lease Liabilities 312798 312798 X 10357649 1182520 1025919 2208439 8149210 30000 30000 8179210 8365415 1025919 1025919 7339496 30000 30000 7369496 Part X, Line 2: The Society applies the guidance on accounting for uncertain tax positions in FASB ASC 740 Income Taxes. The Society has no uncertain tax positions at December 31, 2025 and 2024. The Society is no longer subject to income tax examinations for tax years up to and including 2022. 1 Clinical Investigation Award 3 150000 Research Award Young Investigator Award 2 50000 Research Award Part I, Line 2: Recipients must meet certain criteria to be eligible for grants from the organization. The applicants go through a selection process prior to approval. X X X X 0 0 0 0 0 0 0 1 0 Anna Polyak RN JD Chief Executive Officer 290657 0 20000 0 0 0 21360 0 388 0 332405 0 0 0 Patricia Stella Chief Learning Officer 202990 0 25000 0 0 0 12000 0 31627 0 271617 0 0 0 Myrna Asencio MBA Chief Financial Officer 189773 0 25000 0 0 0 12352 0 5166 0 232291 0 0 0 Evridiki Giannopoulos Chief Growth Officer 165705 0 25000 0 0 0 9657 0 16033 0 216395 0 0 0 Part I, Line 7 The organization provided bonus compensation to its employees. Form 990, Part VI, Section B, line 11b The treasurer reviews the Form 990 with the CFO and auditors. The treasurer then reports to the executive committee. Form 990, Part VI, Section B, line 12c Conflict of interest forms are completed and reviewed on an annual basis. Form 990, Part VI, Section B, line 15 The executive committee of the council performs an annual review for the chief executive officer and makes recommendations to the executive council. the chief executive officer performs annual reviews of all other employees and reports to the executive committee. Form 990, Part VI, Section C, line 19 The organization makes these documents available to the public upon specific request. Form 990, Part XII, Line 2c: There were no changes to the organization's oversight process or selection process during the year.