List of insiders holdings for Xilio Therapeutics Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | GILEAD SCIENCES INC. 10% Owner | 2026-02-17 17:31:38 | 40,384,266 0 | 40,384,266 | Form 4 |
| 2 | Chudnovsky Yekaterina GKCC LLC 10% Owner | 2024-09-27 21:36:39 | 7,000,000 0 | 7,000,000 | Form 13G |
| 3 | Bain Capital Life Sciences Investors LLC Bain Capital Life Sciences Fund II L.P. Bain Capital Life Sciences Investors II LLC BCLS II Investco LP BCLS II Investo (GP) LLC BCIP Life Sciences Associates LP 10% Owner | 2026-02-17 16:30:03 | 6,259,742 0 | 6,259,742 | Form 13G |
| 4 | SV7 Impact Medicine Fund LP SV7 (IMF) GP LLP 10% Owner | 2021-11-03 16:20:18 | 1,613,632 1,613,632 | 3,227,264 | Form 4/A |
| 5 | Russo Rene PRESIDENT AND CEO | 2026-01-05 16:30:18 | 1,914,180 0 | 1,914,180 | Form 4 |
| 6 | TAKEDA PHARMACEUTICAL CO LTD Takeda Ventures Inc. 10% Owner | 2024-07-31 07:46:49 | 1,475,121 0 | 1,475,121 | Form 13G |
| 7 | RiverVest Venture Fund IV L.P. 10% Owner | 2021-11-05 12:54:02 | 1,441,444 0 | 1,441,444 | Form 13D |
| 8 | FMR LLC See Remark 1 | 2024-11-12 10:40:28 | 1,395,853 0 | 1,395,853 | Form 13G |
| 9 | BAY CITY CAPITAL LLC 10% Owner | 2021-10-26 17:02:14 | 0 1,129,490 | 1,129,490 | Form 4 |
| 10 | Frankenfield Christopher James Chief Financial Officer | 2026-01-05 16:30:21 | 732,305 0 | 732,305 | Form 4 |
| 11 | Merck KGaA 10% Owner | 2021-10-26 17:06:33 | 0 680,825 | 680,825 | Form 4 |
| 12 | Luptakova Katarina CHIEF MEDICAL OFFICER | 2026-01-05 16:30:26 | 518,385 0 | 518,385 | Form 4 |
| 13 | LYNCH DANIEL Director 10% Owner | 2021-10-21 20:39:43 | 335,394 0 | 335,394 | Form 3 |
| 14 | FIL Ltd See Remark 1 | 2021-10-28 15:57:55 | 0 218,705 | 218,705 | Form 4 |
| 15 | Alexandria Venture Investments LLC 10% Owner | 2021-10-26 16:51:39 | 166,423 0 | 166,423 | Form 4 |
| 16 | Huber Martin H. Jr. PRESIDENT AND HEAD OF R&D | 2023-08-18 20:30:10 | 136,500 0 | 136,500 | Form 4 |
| 17 | TOMLINSON SIMON M 10% Owner | 2021-10-21 20:52:00 | 131,117 0 | 131,117 | Form 3 |
| 18 | CLACKSON TIMOTHY P 10% Owner | 2021-10-21 20:52:26 | 40,863 70,888 | 111,751 | Form 3 |
| 19 | Brennan Kevin M. SVP, FINANCE AND ACCOUNTING | 2026-01-05 16:30:23 | 111,592 0 | 111,592 | Form 4 |
| 20 | Estate of Ulrich Rodeck 10% Owner | 2021-10-21 20:53:12 | 100,080 0 | 100,080 | Form 3 |
| 21 | Williams John Charles 10% Owner | 2021-10-22 20:16:11 | 100,080 0 | 100,080 | Form 3 |
| 22 | Bello Akintunde Olatokumbo Director | 2025-06-12 16:34:26 | 62,000 0 | 62,000 | Form 4 |
| 23 | HUMPHREY RACHEL Director | 2021-10-21 20:41:15 | 58,133 0 | 58,133 | Form 3 |
| 24 | Giovine Salvatore CHIEF FINANCIAL OFFICER | 2022-02-24 17:30:34 | 49,500 0 | 49,500 | Form 4 |
| 25 | Rossi Christina Director | 2025-06-12 16:34:52 | 31,000 0 | 31,000 | Form 4 |
| 26 | Xu Yuan Director | 2025-06-12 16:35:42 | 31,000 0 | 31,000 | Form 4 |
| 27 | Clancy Paul J Director | 2025-06-12 16:36:08 | 31,000 0 | 31,000 | Form 4 |
| 28 | Curran Daniel J. Director | 2025-06-12 16:36:32 | 31,000 0 | 31,000 | Form 4 |
| 29 | Bonstein Sara Director | 2025-06-12 16:36:54 | 31,000 0 | 31,000 | Form 4 |
| 30 | Brennan Aoife Director | 2025-06-12 16:37:15 | 31,000 0 | 31,000 | Form 4 |
| 31 | ROSS ROBERT W. Director | 2025-06-12 16:37:36 | 31,000 0 | 31,000 | Form 4 |
| 32 | English Edward C PRINCIPAL ACCOUNTING OFFICER | 2023-01-04 16:09:06 | 24,000 0 | 24,000 | Form 4 |
| 33 | Heyman Tomas J. Director | 2023-06-13 16:30:35 | 13,200 0 | 13,200 | Form 4 |
| 34 | Ross Michael Jay Director | 2022-06-17 16:30:50 | 13,200 0 | 13,200 | Form 4 |
| 35 | Shannon James Samuel Director | 2026-03-30 17:29:01 | 10,000 0 | 10,000 | Form 4 |
| 36 | Atlas Venture Fund XI L.P. Atlas Venture Associates XI L.P. Atlas Venture Associates XI LLC Atlas Venture Opportunity Fund I L.P. Atlas Venture Associates Opportunity I L.P. Atlas Venture Associates Opportunity I LLC 10% Owner | 2024-11-14 16:30:23 | 0 0 | 0 | Form 13G |
| 37 | Flynn James E Deerfield Mgmt L.P. DEERFIELD PARTNERS L.P. DEERFIELD MANAGEMENT COMPANY L.P. (SERIES C) Deerfield Mgmt V L.P. Possible Member of 10% Group 10% Owner | 2022-12-29 17:24:09 | 0 0 | 0 | Form 13G |
| 38 | Rock Springs Capital Management LP Rock Springs Capital LLC Rock Springs Capital Master Fund LP Four Pines Master Fund LP 10% Owner | 2025-05-15 10:48:21 | 0 0 | 0 | Form 13G |