Arlene Morris insider trades: Cogent Biosciences (COGT) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Arlene reports to the SEC
and 7 more companies
Open-market buys and sales
16 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 27, 2026 | COGT | ↓ Sell | 45,510 | $37.12 | $1.7M | Direct | Aug 31, 2026 (4d) |
| Nov 20, 2018 | PTN | ↑ Buy | 12,000 | $0.69 | $8K | Direct | Nov 21, 2018 (1d) |
| May 21, 2013 | MNOV | ↓ Sell | 8,800 | $3.28 | $29K | Direct | May 23, 2013 (2d) |
| May 18, 2010 | AFFY | ↓ Sell | 52,896 | $25.06 | $1.3M | Direct | May 19, 2010 (1d) |
| May 13, 2010 | AFFY | ↓ Sell | 180,410 | $25.36 | $4.6M | Direct | May 13, 2010 (0d) |
| Apr 23, 2010 | AFFY | ↓ Sell | 300 | $25.00 | $8K | Direct | Apr 26, 2010 (3d) |
| Sep 28, 2009 | AFFY | ↓ Sell | 101,100 | $25.00 | $2.5M | Direct | Sep 30, 2009 (2d) |
| Sep 1, 2009 | AFFY | ↓ Sell | 6,555 | $25.00 | $164K | Direct | Sep 2, 2009 (1d) |
| Dec 3, 2007 | AFFY | ↓ Sell10b5-1 | 8,163 | $25.08 | $205K | Direct | Dec 5, 2007 (2d) |
| Nov 6, 2007 | AFFY | ↓ Sell10b5-1 | 8,163 | $28.06 | $229K | Direct | Nov 7, 2007 (1d) |
| Oct 3, 2007 | AFFY | ↓ Sell10b5-1 | 8,163 | $26.91 | $220K | Direct | Oct 3, 2007 (0d) |
| Sep 12, 2007 | AFFY | ↓ Sell10b5-1 | 10,727 | $27.97 | $300K | Direct | Sep 12, 2007 (0d) |
| Sep 11, 2007 | AFFY | ↓ Sell10b5-1 | 10,435 | $529.97 | $5.5M | Direct | Sep 11, 2007 (0d) |
| Sep 11, 2007 | AFFY | ↓ Sell10b5-1 | 9,565 | $25.72 | $246K | Direct | Sep 11, 2007 (0d) |
| Sep 7, 2007 | AFFY | ↓ Sell10b5-1 | 25,000 | $25.06 | $626K | Direct | Sep 10, 2007 (3d) |
| Sep 5, 2007 | AFFY | ↓ Sell10b5-1 | 14,683 | $25.00 | $367K | Direct | Sep 5, 2007 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other COGT insiders
Open-market trades in the last 12 months
About Arlene Morris's insider trades
Arlene Morris is an insider at Cogent Biosciences (COGT). Since Sep 5, 2007, Arlene has reported 1 open-market purchase worth $8K and 15 sales worth $18.0M on SEC Form 4. In the last 12 months: 1 sale ($1.7M).
8 sales (43% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (66 filings), option exercises (14 filings), other transactions (1 filing), shares returned to the company (1 filing). 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 COGT insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.