Protopapas Anna (CIK 1347582) reported 11 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-06-18). Recent activity: Buy NUVL (3,444 shares), Sell MRSN (9,609 shares), Sell MRSN (6,721 shares), Sell MRSN (2,890 shares), Buy NUVL (2,647 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-18 | Nuvalent, Inc. (NUVL) | Director | Buy | 3,444 | $0 |
| 2026-01-06 | Mersana Therapeutics, Inc. (MRSN) | Director | Sell | 9,609 | $0 |
| 2026-01-06 | Mersana Therapeutics, Inc. (MRSN) | Director | Sell | 6,721 | $0 |
| 2026-01-06 | Mersana Therapeutics, Inc. (MRSN) | Director | Sell | 2,890 | $0 |
| 2025-06-20 | Nuvalent, Inc. (NUVL) | Director | Buy | 2,647 | $0 |
| 2025-01-17 | Mersana Therapeutics, Inc. (MRSN) | Director | Buy | 21,250 | $0 |
| 2025-01-17 | Mersana Therapeutics, Inc. (MRSN) | Director | Sell | 8,637 | $5,009 |
| 2025-01-16 | Mersana Therapeutics, Inc. (MRSN) | Director | Buy | 16,750 | $0 |
| 2025-01-16 | Mersana Therapeutics, Inc. (MRSN) | Director | Sell | 6,191 | $3,900 |
| 2025-01-15 | Mersana Therapeutics, Inc. (MRSN) | Director | Buy | 31,250 | $0 |
| 2025-01-15 | Mersana Therapeutics, Inc. (MRSN) | Director | Sell | 11,534 | $7,612 |
Source: SEC Form 4 filings · as of 2026-06-18