Anna Protopapas insider trades: Mersana Therapeutics (MRSN) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Anna reports to the SEC
Open-market buys and sales
28 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 16, 2025 | MRSN | ↓ Sell | 8,637 | $0.58 | $5K | Direct | Jan 17, 2025 (1d) |
| Jan 15, 2025 | MRSN | ↓ Sell | 6,191 | $0.63 | $4K | Direct | Jan 16, 2025 (1d) |
| Jan 14, 2025 | MRSN | ↓ Sell | 11,534 | $0.66 | $8K | Direct | Jan 15, 2025 (1d) |
| Jan 16, 2024 | MRSN | ↓ Sell | 29,399 | $2.71 | $80K | Direct | Jan 17, 2024 (1d) |
| Dec 18, 2023 | NUVL | ↓ Sell | 5,000 | $75.67 | $378K | Direct | Dec 20, 2023 (2d) |
| Jan 17, 2023 | MRSN | ↓ Sell | 17,346 | $5.74 | $100K | Direct | Jan 18, 2023 (1d) |
| Jul 19, 2021 | MRSN | ↓ Sell | 41,944 | $12.24 | $513K | Direct | Jul 19, 2021 (0d) |
| May 1, 2008 | MLNM | ↓ Sell | 2,041 | $24.88 | $51K | Direct | May 5, 2008 (4d) |
| Mar 7, 2008 | MLNM | ↓ Sell | 2,010 | $13.34 | $27K | Direct | Mar 11, 2008 (4d) |
| Feb 29, 2008 | MLNM | ↓ Sell | 4,289 | $13.67 | $59K | Direct | Mar 4, 2008 (4d) |
| Feb 19, 2008 | MLNM | ↓ Sell | 3,561 | $14.03 | $50K | Direct | Feb 19, 2008 (0d) |
| Jan 18, 2008 | MLNM | ↓ Sell | 3,812 | $16.53 | $63K | Direct | Jan 22, 2008 (4d) |
| Jan 8, 2008 | MLNM | ↓ Sell | 1,071 | $15.23 | $16K | Direct | Jan 9, 2008 (1d) |
| Jan 3, 2008 | MLNM | ↓ Sell | 4,091 | $16.11 | $66K | Direct | Jan 7, 2008 (4d) |
| Dec 3, 2007 | MLNM | ↓ Sell | 5,674 | $14.55 | $83K | Direct | Dec 3, 2007 (0d) |
| Nov 26, 2007 | MLNM | ↓ Sell | 5,000 | $14.32 | $72K | Direct | Nov 27, 2007 (1d) |
| Nov 19, 2007 | MLNM | ↓ Sell | 5,000 | $13.62 | $68K | Direct | Nov 20, 2007 (1d) |
| Nov 12, 2007 | MLNM | ↓ Sell | 5,000 | $13.41 | $67K | Direct | Nov 13, 2007 (1d) |
| Nov 5, 2007 | MLNM | ↓ Sell | 5,000 | $12.62 | $63K | Direct | Nov 6, 2007 (1d) |
| Nov 1, 2007 | MLNM | ↓ Sell | 368 | $12.00 | $4K | Direct | Nov 2, 2007 (1d) |
| May 1, 2007 | MLNM | ↓ Sell | 1,929 | $11.07 | $21K | Direct | May 1, 2007 (0d) |
| Apr 9, 2007 | MLNM | ↓ Sell | 4,250 | $11.56 | $49K | Direct | Apr 10, 2007 (1d) |
| Apr 2, 2007 | MLNM | ↓ Sell | 4,250 | $11.40 | $48K | Direct | Apr 2, 2007 (0d) |
| Mar 26, 2007 | MLNM | ↓ Sell | 4,250 | $11.38 | $48K | Direct | Mar 27, 2007 (1d) |
| Mar 19, 2007 | MLNM | ↓ Sell | 4,088 | $10.73 | $44K | Direct | Mar 20, 2007 (1d) |
| Mar 12, 2007 | MLNM | ↓ Sell | 5,803 | $10.60 | $62K | Direct | Mar 13, 2007 (1d) |
| Jan 4, 2007 | MLNM | ↓ Sell | 4,524 | $11.02 | $50K | Direct | Jan 8, 2007 (4d) |
| Nov 1, 2006 | MLNM | ↓ Sell | 436 | $11.64 | $5K | Direct | Nov 2, 2006 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Anna Protopapas's insider trades
Anna Protopapas is a director at Mersana Therapeutics (MRSN). Since Nov 1, 2006, Anna has reported no open-market purchases and 28 sales worth $2.1M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (29 filings), option exercises (20 filings), shares returned to the company (5 filings), other transactions (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MRSN insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.