TCRX insider buying – TScan Therapeutics, Inc.
20 insider purchases since 2016 worth $30.3M by 11 different insiders. Last 12 months: 1 purchases, $145,621. Most recent filing: 2025-12-23.
Small company Public float $57M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| 667, L.P. Director | $23.9M 2× · 2,784,792 sh | 2021-07-20 2022-05-10 | – | 1,747,506 shares as of 2022-05-12 | Holds - never sold |
| Lynx1 Capital Management LP 10% Owner | $3.3M 2× · 2,750,595 sh | 2025-05-19 2025-12-19 | 1× · $63,904 last 2023-05-31 | 15,950,332 shares as of 2025-12-23 | Holds (sold earlier) |
| Westphal Christoph H 10% Owner | $2.0M 1× · 133,333 sh | 2021-07-20 2021-07-20 | – | 2,315,423 shares as of 2021-07-22 | Holds - never sold |
| Nichols Weston 10% Owner | $385,718 1× · 131,800 sh | 2024-12-12 2024-12-12 | – | 10,614,694 shares as of 2024-12-16 | Holds - never sold |
| BARBERICH TIMOTHY J Director | $242,178 2× · 67,027 sh | 2023-06-02 2023-12-18 | – | 100,286 shares as of 2023-12-21 | Holds - never sold |
| SOUTHWELL DAVID P CEO | $185,830 2× · 36,000 sh | 2021-09-08 2022-05-18 | – | 171,569 shares as of 2022-05-20 | Holds - never sold |
| Silver Brian M. CFO | $147,505 4× · 26,885 sh | 2021-07-20 2022-03-24 | – | 32,885 shares as of 2022-12-29 | Holds - never sold |
| Klencke Barbara Director | $107,950 3× · 20,000 sh | 2023-12-14 2024-09-23 | – | 70,000 shares as of 2024-09-24 | Holds - never sold |
| ZDRAVESKI ZORAN Officer | $35,276 1× · 4,716 sh | 2021-09-23 2021-09-23 | 1× · $951,885 last 2024-08-23 | 67,111 shares as of 2024-08-27 | Sold part |
| MacBeath Gavin Officer | $31,098 1× · 5,000 sh | 2021-09-20 2021-09-20 | – | 49,710 shares as of 2021-09-22 | Holds - never sold |
| Desmarais William Officer | $22,700 1× · 2,500 sh | 2021-08-27 2021-08-27 | – | 2,500 shares as of 2021-08-31 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2025 | 2 | $3.3M | 1 | – | – |
| 2024 | 3 | $468,268 | 2 | 1 | $951,885 |
| 2023 | 3 | $267,578 | 2 | 1 | $63,904 |
| 2022 | 3 | $2.7M | 3 | – | – |
| 2021 | 9 | $23.7M | 7 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2025-12-23 | Lynx1 Capital Management LP | 10% Owner | 161,801 | $0.90 | $145,621 | +2.1% | SEC |
| 2025-05-21 | Lynx1 Capital Management LP | 10% Owner | 2,588,794 | $1.20 | $3.1M | +48.3% | SEC |
| 2024-12-16 | Nichols Weston | 10% Owner | 131,800 | $2.93 | $385,718 | +2.5% | SEC |
| 2024-09-24 | Klencke Barbara | Director | 5,000 | $5.29 | $26,450 | +12.5% | SEC |
| 2024-08-27 | Klencke Barbara | Director | 10,000 | $5.61 | $56,100 | +33.3% | SEC |
| 2023-12-21 | BARBERICH TIMOTHY J | Director | 29,147 | $4.89 | $142,554 | +76.9% | SEC |
| 2023-12-18 | Klencke Barbara | Director | 5,000 | $5.08 | $25,400 | +20.0% | SEC |
| 2023-06-06 | BARBERICH TIMOTHY J | Director | 37,880 | $2.63 | $99,624 | SEC | |
| 2022-05-20 | SOUTHWELL DAVID P | CEO | 25,000 | $3.59 | $89,800 | +17.1% | SEC |
| 2022-05-12 | 667, L.P. | Director | 1,359,792 | $1.88 | $2.6M | +116.3% | SEC |
| 2022-03-28 | Silver Brian M. | CFO | 15,000 | $3.40 | $51,000 | +126.2% | SEC |
| 2021-09-27 | ZDRAVESKI ZORAN | Officer | 4,716 | $7.48 | $35,276 | SEC | |
| 2021-09-22 | Silver Brian M. | CFO | 5,000 | $6.32 | $31,600 | +72.6% | SEC |
| 2021-09-22 | MacBeath Gavin | Officer | 5,000 | $6.22 | $31,098 | +11.2% | SEC |
| 2021-09-13 | Silver Brian M. | CFO | 5,885 | $8.48 | $49,905 | +588.5% | SEC |
| 2021-09-09 | SOUTHWELL DAVID P | CEO | 11,000 | $8.73 | $96,030 | +12.7% | SEC |
| 2021-08-31 | Desmarais William | Officer | 2,500 | $9.08 | $22,700 | SEC | |
| 2021-07-22 | Westphal Christoph H | 10% Owner | 133,333 | $15.00 | $2.0M | +11.6% | SEC |
| 2021-07-22 | Silver Brian M. | CFO | 1,000 | $15.00 | $15,000 | SEC | |
| 2021-07-22 | 667, L.P. | Director | 1,425,000 | $15.00 | $21.4M | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2024-08-27 | ZDRAVESKI ZORAN | Officer | 164,686 | $5.78 | $951,885 | Sale | SEC |
| 2023-06-02 | Lynx1 Capital Management LP | 10% Owner | 25,400 | $2.52 | $63,904 | Sale | SEC |
Recent company events (SEC 8-K)
- 2026-11-12 - Quarterly results released (SEC)
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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