XLO Insider Transactions
92 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–92; provenance stays internal.
XLO insiders transaction timeline
PurchaseSale
| Insider profile | Role | Date | Transaction | Shares | Price |
|---|---|---|---|---|---|
| Shannon James Samuel | Director | 2026-03-26 | Purchase | 5,000.0 | $8.79 |
| Brennan Kevin M. | SVP, FINANCE AND ACCOUNTING | 2026-01-02 | Sale | 1,826.0 | $0.64 |
| Frankenfield Christopher James | Chief Financial Officer | 2026-01-02 | Sale | 7,030.0 | $0.64 |
| Shannon James Samuel | Director | 2025-06-17 | Purchase | 25,000.0 | $0.69 |
| Shannon James Samuel | Director | 2025-06-16 | Purchase | 45,000.0 | $0.69 |
| Russo Rene | PRESIDENT AND CEO | 2025-06-16 | Purchase | 36,289.0 | $0.68 |
| Frankenfield Christopher James | Chief Financial Officer | 2025-01-02 | Sale | 6,954.0 | $0.98 |
| Brennan Kevin M. | SVP, FINANCE AND ACCOUNTING | 2025-01-02 | Sale | 1,803.0 | $0.98 |
| GILEAD SCIENCES, INC. | TenPercentOwner | 2024-12-18 | Purchase | 1,759,978.0 | $1.04 |
| GILEAD SCIENCES, INC. | TenPercentOwner | 2024-04-02 | Purchase | 485,250.0 | $0.76 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2024-02-08 | Sale | 267.0 | $0.64 |
| Atlas Venture Opportunity Fund I, L.P. | TenPercentOwner | 2024-02-08 | Sale | 267.0 | $0.64 |
| Atlas Venture Associates Opportunity I, L.P. | TenPercentOwner | 2024-02-08 | Sale | 267.0 | $0.64 |
| Atlas Venture Associates Opportunity I, LLC | TenPercentOwner | 2024-02-08 | Sale | 267.0 | $0.64 |
| Atlas Venture Associates XI, LLC | TenPercentOwner | 2024-02-08 | Sale | 267.0 | $0.64 |
| Atlas Venture Associates XI, L.P. | TenPercentOwner | 2024-02-08 | Sale | 267.0 | $0.64 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2024-02-08 | Sale | 733.0 | $0.64 |
| Atlas Venture Opportunity Fund I, L.P. | TenPercentOwner | 2024-02-08 | Sale | 733.0 | $0.64 |
| Atlas Venture Associates Opportunity I, L.P. | TenPercentOwner | 2024-02-08 | Sale | 733.0 | $0.64 |
| Atlas Venture Associates Opportunity I, LLC | TenPercentOwner | 2024-02-08 | Sale | 733.0 | $0.64 |
| Atlas Venture Associates XI, LLC | TenPercentOwner | 2024-02-08 | Sale | 733.0 | $0.64 |
| Atlas Venture Associates XI, L.P. | TenPercentOwner | 2024-02-08 | Sale | 733.0 | $0.64 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2024-01-12 | Sale | 560.0 | $0.83 |
| Atlas Venture Opportunity Fund I, L.P. | TenPercentOwner | 2024-01-12 | Sale | 560.0 | $0.83 |
| Atlas Venture Associates Opportunity I, L.P. | TenPercentOwner | 2024-01-12 | Sale | 560.0 | $0.83 |
| Atlas Venture Associates Opportunity I, LLC | TenPercentOwner | 2024-01-12 | Sale | 560.0 | $0.83 |
| Atlas Venture Associates XI, LLC | TenPercentOwner | 2024-01-12 | Sale | 560.0 | $0.83 |
| Atlas Venture Associates XI, L.P. | TenPercentOwner | 2024-01-12 | Sale | 560.0 | $0.83 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2024-01-12 | Sale | 1,540.0 | $0.83 |
| Atlas Venture Opportunity Fund I, L.P. | TenPercentOwner | 2024-01-12 | Sale | 1,540.0 | $0.83 |
| Atlas Venture Associates Opportunity I, L.P. | TenPercentOwner | 2024-01-12 | Sale | 1,540.0 | $0.83 |
| Atlas Venture Associates Opportunity I, LLC | TenPercentOwner | 2024-01-12 | Sale | 1,540.0 | $0.83 |
| Atlas Venture Associates XI, LLC | TenPercentOwner | 2024-01-12 | Sale | 1,540.0 | $0.83 |
| Atlas Venture Associates XI, L.P. | TenPercentOwner | 2024-01-12 | Sale | 1,540.0 | $0.83 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2024-01-11 | Sale | 569.0 | $0.87 |
| Atlas Venture Opportunity Fund I, L.P. | TenPercentOwner | 2024-01-11 | Sale | 569.0 | $0.87 |
| Atlas Venture Associates Opportunity I, L.P. | TenPercentOwner | 2024-01-11 | Sale | 569.0 | $0.87 |
| Atlas Venture Associates Opportunity I, LLC | TenPercentOwner | 2024-01-11 | Sale | 569.0 | $0.87 |
| Atlas Venture Associates XI, LLC | TenPercentOwner | 2024-01-11 | Sale | 569.0 | $0.87 |
| Atlas Venture Associates XI, L.P. | TenPercentOwner | 2024-01-11 | Sale | 569.0 | $0.87 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2024-01-11 | Sale | 1,566.0 | $0.87 |
| Atlas Venture Opportunity Fund I, L.P. | TenPercentOwner | 2024-01-11 | Sale | 1,566.0 | $0.87 |
| Atlas Venture Associates Opportunity I, L.P. | TenPercentOwner | 2024-01-11 | Sale | 1,566.0 | $0.87 |
| Atlas Venture Associates Opportunity I, LLC | TenPercentOwner | 2024-01-11 | Sale | 1,566.0 | $0.87 |
| Atlas Venture Associates XI, LLC | TenPercentOwner | 2024-01-11 | Sale | 1,566.0 | $0.87 |
| Atlas Venture Associates XI, L.P. | TenPercentOwner | 2024-01-11 | Sale | 1,566.0 | $0.87 |
| BCIP Life Sciences Associates, LP | TenPercentOwner | 2021-12-10 | Purchase | 3,188.0 | $10.24 |
| Bain Capital Life Sciences Investors, LLC | TenPercentOwner | 2021-12-10 | Purchase | 3,188.0 | $10.24 |
| Bain Capital Life Sciences Fund II, L.P. | TenPercentOwner | 2021-12-10 | Purchase | 3,188.0 | $10.24 |
| Bain Capital Life Sciences Investors II, LLC | TenPercentOwner | 2021-12-10 | Purchase | 3,188.0 | $10.24 |
| BCLS II Investco, LP | TenPercentOwner | 2021-12-10 | Purchase | 3,188.0 | $10.24 |
| BCLS II Investo (GP), LLC | TenPercentOwner | 2021-12-10 | Purchase | 3,188.0 | $10.24 |
| BCIP Life Sciences Associates, LP | TenPercentOwner | 2021-12-10 | Purchase | 21,812.0 | $9.56 |
| Bain Capital Life Sciences Investors, LLC | TenPercentOwner | 2021-12-10 | Purchase | 21,812.0 | $9.56 |
| Bain Capital Life Sciences Fund II, L.P. | TenPercentOwner | 2021-12-10 | Purchase | 21,812.0 | $9.56 |
| Bain Capital Life Sciences Investors II, LLC | TenPercentOwner | 2021-12-10 | Purchase | 21,812.0 | $9.56 |
| BCLS II Investco, LP | TenPercentOwner | 2021-12-10 | Purchase | 21,812.0 | $9.56 |
| BCLS II Investo (GP), LLC | TenPercentOwner | 2021-12-10 | Purchase | 21,812.0 | $9.56 |
| BCIP Life Sciences Associates, LP | TenPercentOwner | 2021-12-09 | Purchase | 4,011.0 | $9.84 |
| Bain Capital Life Sciences Investors, LLC | TenPercentOwner | 2021-12-09 | Purchase | 4,011.0 | $9.84 |
| Bain Capital Life Sciences Fund II, L.P. | TenPercentOwner | 2021-12-09 | Purchase | 4,011.0 | $9.84 |
| Bain Capital Life Sciences Investors II, LLC | TenPercentOwner | 2021-12-09 | Purchase | 4,011.0 | $9.84 |
| BCLS II Investco, LP | TenPercentOwner | 2021-12-09 | Purchase | 4,011.0 | $9.84 |
| BCLS II Investo (GP), LLC | TenPercentOwner | 2021-12-09 | Purchase | 4,011.0 | $9.84 |
| BCIP Life Sciences Associates, LP | TenPercentOwner | 2021-12-08 | Purchase | 13,458.0 | $9.62 |
| Bain Capital Life Sciences Investors, LLC | TenPercentOwner | 2021-12-08 | Purchase | 13,458.0 | $9.62 |
| Bain Capital Life Sciences Fund II, L.P. | TenPercentOwner | 2021-12-08 | Purchase | 13,458.0 | $9.62 |
| Bain Capital Life Sciences Investors II, LLC | TenPercentOwner | 2021-12-08 | Purchase | 13,458.0 | $9.62 |
| BCLS II Investco, LP | TenPercentOwner | 2021-12-08 | Purchase | 13,458.0 | $9.62 |
| BCLS II Investo (GP), LLC | TenPercentOwner | 2021-12-08 | Purchase | 13,458.0 | $9.62 |
| SV7 Impact Medicine Fund LP | TenPercentOwner | 2021-10-26 | Purchase | 312,500.0 | $16.0 |
| SV7 (IMF) GP LLP | TenPercentOwner | 2021-10-26 | Purchase | 312,500.0 | $16.0 |
| SV7 Impact Medicine Fund LP | TenPercentOwner | 2021-10-26 | Purchase | 312,500.0 | $16.0 |
| SV7 (IMF) GP LLP | TenPercentOwner | 2021-10-26 | Purchase | 312,500.0 | $16.0 |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| Deerfield Mgmt L.P. | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| DEERFIELD PARTNERS, L.P. | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| Flynn James E | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| Deerfield Mgmt V, L.P. | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| Deerfield Mgmt L.P. | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| DEERFIELD PARTNERS, L.P. | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| Flynn James E | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| Deerfield Mgmt V, L.P. | TenPercentOwnerOther | 2021-10-26 | Purchase | 387,500.0 | $16.0 |
| Rock Springs Capital Management LP | TenPercentOwner | 2021-10-26 | Purchase | 500,000.0 | $16.0 |
| Rock Springs Capital Master Fund LP | TenPercentOwner | 2021-10-26 | Purchase | 500,000.0 | $16.0 |
| Rock Springs Capital LLC | TenPercentOwner | 2021-10-26 | Purchase | 500,000.0 | $16.0 |
| Four Pines Master Fund LP | TenPercentOwner | 2021-10-26 | Purchase | 500,000.0 | $16.0 |
| BAY CITY CAPITAL LLC | TenPercentOwner | 2021-10-26 | Purchase | 312,500.0 | $16.0 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2021-10-26 | Purchase | 187,500.0 | $16.0 |
| Atlas Venture Opportunity Fund I, L.P. | TenPercentOwner | 2021-10-26 | Purchase | 187,500.0 | $16.0 |
| RiverVest Venture Fund IV, L.P. | TenPercentOwner | 2021-10-26 | Purchase | 250,000.0 | $16.0 |