Charles McWherter insider trades: 89bio (ETNB) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Charles reports to the SEC


Open-market buys and sales
15 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 22, 2025 | ETNB | ↑ Buy | 15,000 | $6.66 | $100K | Direct | Jan 23, 2025 (1d) |
| Dec 5, 2024 | ETNB | ↑ Buy | 10,000 | $8.00 | $80K | Direct | Dec 9, 2024 (4d) |
| Jan 19, 2024 | CBAY | ↓ Sell | 18,403 | $23.67 | $436K | Direct | Jan 22, 2024 (3d) |
| Dec 18, 2023 | CBAY | ↓ Sell | 11,332 | $21.48 | $243K | Direct | Dec 18, 2023 (0d) |
| Nov 17, 2023 | CBAY | ↓ Sell | 11,342 | $18.28 | $207K | Direct | Nov 17, 2023 (0d) |
| Oct 18, 2023 | CBAY | ↓ Sell | 21,743 | $14.07 | $306K | Direct | Oct 18, 2023 (0d) |
| Sep 18, 2023 | CBAY | ↓ Sell | 21,746 | $16.22 | $353K | Direct | Sep 19, 2023 (1d) |
| Aug 18, 2023 | CBAY | ↓ Sell | 21,746 | $11.47 | $249K | Direct | Aug 18, 2023 (0d) |
| Jul 18, 2023 | CBAY | ↓ Sell | 21,749 | $11.43 | $249K | Direct | Jul 19, 2023 (1d) |
| Jun 20, 2023 | CBAY | ↓ Sell | 21,749 | $8.16 | $177K | Direct | Jun 21, 2023 (1d) |
| May 18, 2023 | CBAY | ↓ Sell | 21,749 | $9.08 | $197K | Direct | May 19, 2023 (1d) |
| Nov 2, 2017 | CBAY | ↑ Buy | 5,000 | $8.67 | $43K | Direct | Nov 6, 2017 (4d) |
| Jul 20, 2017 | CBAY | ↑ Buy | 5,000 | $7.43 | $37K | Direct | Jul 24, 2017 (4d) |
| Apr 15, 2016 | CBAY | ↑ Buy | 3,000 | $1.68 | $5K | Direct | Apr 19, 2016 (4d) |
| May 15, 2015 | CBAY | ↑ Buy | 2,000 | $3.16 | $6K | Direct | May 19, 2015 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Charles McWherter's insider trades
Charles McWherter is an insider at 89bio (ETNB). Since May 15, 2015, Charles has reported 6 open-market purchases worth $272K and 9 sales worth $2.4M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (17 filings), option exercises (9 filings), shares returned to the company (3 filings), other transactions (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 ETNB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.