Frank Witney insider trades: Cerus (CERS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Frank reports to the SEC
and 3 more companies
Open-market buys and sales
8 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 9, 2024 | CERS | ↑ Buy | 20,000 | $1.89 | $38K | Direct | May 10, 2024 (1d) |
| Jan 29, 2020 | CERS | ↑ Buy | 24,096 | $4.15 | $100K | Direct | Feb 3, 2020 (5d) |
| Jul 20, 2015 | AFFX | ↓ Sell | 37,991 | $11.20 | $425K | Direct | Jul 21, 2015 (1d) |
| Jul 10, 2015 | AFFX | ↓ Sell | 62,756 | $11.00 | $690K | Direct | Jul 10, 2015 (0d) |
| Jun 26, 2015 | AFFX | ↓ Sell10b5-1 | 75,000 | $11.22 | $842K | Direct | Jun 29, 2015 (3d) |
| Jun 4, 2015 | AFFX | ↓ Sell10b5-1 | 75,000 | $11.78 | $884K | Direct | Jun 5, 2015 (1d) |
| Aug 23, 2011 | AFFX | ↑ Buy | 20,000 | $4.74 | $95K | Direct | Aug 24, 2011 (1d) |
| Aug 9, 2011 | AFFX | ↑ Buy | 20,000 | $4.39 | $88K | Direct | Aug 9, 2011 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other CERS insiders
Open-market trades in the last 12 months
About Frank Witney's insider trades
Frank Witney is an insider at Cerus (CERS). Since Aug 9, 2011, Frank has reported 4 open-market purchases worth $320K and 4 sales worth $2.8M on SEC Form 4. There have been no open-market trades in the last 12 months.
2 sales (61% 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 (42 filings), shares withheld for taxes (15 filings), option exercises (7 filings), shares returned to the company (2 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 CERS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.