Douglas E Williams insider trades: Codiak BioSciences (CDAK) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Douglas reports to the SEC
and 7 more companies
Open-market buys and sales
11 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 28, 2023 | CDAK | ↓ Sell | 41,667 | $0.18 | $8K | Direct | Mar 30, 2023 (2d) |
| Feb 17, 2023 | CDAK | ↓ Sell | 14,793 | $1.37 | $20K | Direct | Feb 21, 2023 (4d) |
| Jan 20, 2023 | CDAK | ↓ Sell | 5,075 | $0.57 | $3K | Direct | Jan 23, 2023 (3d) |
| Aug 14, 2018 | OVID | ↑ Buy | 5,000 | $6.49 | $32K | Direct | Aug 16, 2018 (2d) |
| Jun 19, 2015 | BIIB | ↓ Sell | 3,841 | $410.00 | $1.6M | Direct | Jun 22, 2015 (3d) |
| Mar 19, 2014 | BIIB | ↓ Sell | 3,505 | $352.29 | $1.2M | Direct | Mar 21, 2014 (2d) |
| Aug 26, 2013 | BIIB | ↓ Sell | 4,368 | $211.35 | $923K | Direct | Aug 28, 2013 (2d) |
| Mar 6, 2008 | ARRY | ↑ Buy | 2,500 | $6.16 | $15K | Direct | Mar 6, 2008 (0d) |
| Feb 20, 2008 | ZGEN | ↑ Buy | 2,500 | $8.99 | $22K | Direct | Feb 22, 2008 (2d) |
| Sep 4, 2007 | ZGEN | ↑ Buy | 2,000 | $12.25 | $25K | Direct | Sep 6, 2007 (2d) |
| Sep 4, 2007 | ANDS | ↑ Buy | 2,000 | $2.36 | $5K | Direct | Sep 5, 2007 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Douglas E Williams's insider trades
Douglas E Williams is President & CEO at Codiak BioSciences (CDAK). Since Sep 4, 2007, Douglas has reported 5 open-market purchases worth $100K and 6 sales worth $3.8M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (59 filings), shares withheld for taxes (12 filings), option exercises (11 filings), other transactions (4 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 CDAK insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.