TScan Therapeutics, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Lynx1 Capital Management LP | — | Purchase | 75,500 | $0.90 | $67,950 | 8,012,916 | Dec 19, 2025 |
| Lynx1 Capital Management LP | — | Purchase | 1,388,794 | $1.20 | $1,666,553 | 6,746,141 | May 20, 2025 |
| Nichols Weston | — | Purchase | 31,800 | $3.01 | $95,718 | 5,257,347 | Dec 13, 2024 |
| Nichols Weston | — | Purchase | 947 | $4.34 | $4,110 | 5,225,547 | Nov 15, 2024 |
| Klencke Barbara | — | Purchase | 5,000 | $5.29 | $26,450 | 45,000 | Sep 23, 2024 |
| Klencke Barbara | — | Purchase | 5,000 | $5.69 | $28,450 | 35,000 | Aug 26, 2024 |
| ZDRAVESKI ZORAN | See Remarks | Option Exercise | 54,895 | $4.85 | $266,241 | 67,111 | Aug 23, 2024 |
| BARBERICH TIMOTHY J | — | Purchase | 317 | $4.97 | $1,575 | 67,027 | Dec 18, 2023 |
| Klencke Barbara | — | Purchase | 5,000 | $5.08 | $25,400 | 30,000 | Dec 14, 2023 |
| BARBERICH TIMOTHY J | — | Purchase | 37,880 | $2.63 | $99,624 | 37,880 | Jun 2, 2023 |
| Lynx1 Capital Management LP | — | Sale | 15,000 | $2.52 | $37,800 | 5,225,000 | May 31, 2023 |
| Silver Brian M. | Chief Financial Officer | Purchase | 3,158 | $1.56 | $4,926 | 32,885 | Dec 27, 2022 |
| SOUTHWELL DAVID P | Chief Executive Officer | Purchase | 10,000 | $3.55 | $35,500 | 171,569 | May 18, 2022 |
| 667, L.P. | — | Purchase | 101,831 | $1.93 | $196,534 | 1,747,506 | May 10, 2022 |
| Silver Brian M. | Chief Financial Officer | Purchase | 15,000 | $3.40 | $51,000 | 26,885 | Mar 24, 2022 |
| SOUTHWELL DAVID P | Chief Executive Officer | Option Exercise | 48,670 | $1.97 | $95,880 | 146,569 | Dec 23, 2021 |
| ZDRAVESKI ZORAN | Chief Legal Officer | Purchase | 4,716 | $7.48 | $35,276 | 4,716 | Sep 23, 2021 |
| Silver Brian M. | Chief Financial Officer | Purchase | 5,000 | $6.32 | $31,600 | 11,885 | Sep 21, 2021 |
| MacBeath Gavin | Chief Scientific Officer | Purchase | 4,943 | $6.22 | $30,745 | 49,710 | Sep 21, 2021 |
| Silver Brian M. | Chief Financial Officer | Purchase | 5,885 | $8.48 | $49,905 | 6,885 | Sep 9, 2021 |
| SOUTHWELL DAVID P | Chief Executive Officer | Purchase | 11,000 | $8.73 | $96,030 | 97,899 | Sep 8, 2021 |
| Desmarais William | Chief Business Officer | Purchase | 2,500 | $9.08 | $22,700 | 2,500 | Aug 27, 2021 |
| Westphal Christoph H | — | Purchase | 133,333 | $15.00 | $1,999,995 | 1,278,838 | Jul 20, 2021 |
| 667, L.P. | — | Purchase | 1,320,302 | $15.00 | $19,804,530 | 1,320,302 | Jul 20, 2021 |
| BARBERICH TIMOTHY J | — | C | 33,259 | — | — | 33,259 | Jul 20, 2021 |
| Silver Brian M. | Chief Financial Officer | Purchase | 1,000 | $15.00 | $15,000 | 1,000 | Jul 20, 2021 |