David O. Watson insider trades: Apellis Pharmaceuticals (APLS) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where David reports to the SEC
Open-market buys and sales
31 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 22, 2026 | APLS | ↓ Sell | 7,832 | $21.77 | $170K | Direct | Jan 23, 2026 (1d) |
| Jan 20, 2026 | APLS | ↓ Sell | 2,475 | $19.79 | $49K | Direct | Jan 21, 2026 (1d) |
| Jan 13, 2026 | APLS | ↓ Sell | 5,780 | $22.19 | $128K | Direct | Jan 15, 2026 (2d) |
| Dec 16, 2025 | APLS | ↓ Sell | 5,000 | $24.49 | $122K | Direct | Dec 18, 2025 (2d) |
| Nov 17, 2025 | APLS | ↓ Sell | 5,000 | $20.06 | $100K | Direct | Nov 18, 2025 (1d) |
| Oct 16, 2025 | APLS | ↓ Sell | 5,000 | $25.22 | $126K | Direct | Oct 17, 2025 (1d) |
| Sep 16, 2025 | APLS | ↓ Sell | 5,000 | $24.34 | $122K | Direct | Sep 18, 2025 (2d) |
| Sep 10, 2025 | APLS | ↓ Sell | 20,000 | $26.17 | $523K | Indirect Owner (The David O. Watson Irre | Sep 12, 2025 (2d) |
| Aug 18, 2025 | APLS | ↓ Sell | 5,000 | $27.80 | $139K | Direct | Aug 19, 2025 (1d) |
| Jul 16, 2025 | APLS | ↓ Sell | 5,000 | $19.55 | $98K | Direct | Jul 18, 2025 (2d) |
| Jun 16, 2025 | APLS | ↓ Sell | 5,000 | $18.77 | $94K | Direct | Jun 18, 2025 (2d) |
| Mar 5, 2025 | APLS | ↓ Sell | 5,569 | $25.10 | $140K | Direct | Mar 6, 2025 (1d) |
| Jan 29, 2025 | APLS | ↓ Sell | 695 | $29.52 | $21K | Direct | Jan 30, 2025 (1d) |
| Jan 22, 2025 | APLS | ↓ Sell | 3,323 | $30.43 | $101K | Direct | Jan 23, 2025 (1d) |
| Jan 17, 2025 | APLS | ↓ Sell | 2,201 | $29.96 | $66K | Direct | Jan 21, 2025 (4d) |
| Jan 13, 2025 | APLS | ↓ Sell | 4,965 | $28.70 | $143K | Direct | Jan 14, 2025 (1d) |
| Dec 11, 2024 | APLS | ↓ Sell | 5,000 | $34.23 | $171K | Direct | Dec 13, 2024 (2d) |
| Feb 12, 2024 | APLS | ↓ Sell | 781 | $67.77 | $53K | Direct | Feb 13, 2024 (1d) |
| Jan 29, 2024 | APLS | ↓ Sell | 906 | $64.14 | $58K | Direct | Jan 31, 2024 (2d) |
| Jan 22, 2024 | APLS | ↓ Sell | 4,184 | $65.00 | $272K | Direct | Jan 23, 2024 (1d) |
| Jan 16, 2024 | APLS | ↓ Sell | 4,240 | $66.81 | $283K | Direct | Jan 17, 2024 (1d) |
| Dec 19, 2023 | APLS | ↓ Sell | 3,905 | $57.23 | $223K | Direct | Dec 20, 2023 (1d) |
| Jul 3, 2023 | APLS | ↓ Sell | 8,510 | $89.98 | $766K | Direct | Jul 6, 2023 (3d) |
| Jun 22, 2022 | APLS | ↓ Sell | 10,000 | $44.51 | $445K | Direct | Jun 23, 2022 (1d) |
| Apr 25, 2022 | APLS | ↓ Sell | 5,000 | $50.00 | $250K | Direct | Apr 27, 2022 (2d) |
| Dec 27, 2021 | APLS | ↓ Sell | 1,200 | $48.50 | $58K | Direct | Dec 28, 2021 (1d) |
| Dec 22, 2021 | APLS | ↓ Sell | 10,571 | $47.81 | $505K | Direct | Dec 23, 2021 (1d) |
| Dec 14, 2020 | APLS | ↓ Sell | 18,333 | $50.94 | $934K | Direct | Dec 15, 2020 (1d) |
| Feb 10, 2020 | APLS | ↓ Sell10b5-1 | 5,000 | $44.50 | $223K | Direct | Feb 12, 2020 (2d) |
| Jan 27, 2020 | APLS | ↓ Sell10b5-1 | 3,000 | $40.47 | $121K | Direct | Jan 28, 2020 (1d) |
| Sep 14, 2018 | APLS | ↓ Sell | 15,776 | $18.78 | $296K | Direct | Sep 17, 2018 (3d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other APLS insiders
Open-market trades in the last 12 months
About David O. Watson's insider trades
David O. Watson is General Counsel at Apellis Pharmaceuticals (APLS). Since Sep 14, 2018, David has reported no open-market purchases and 31 sales worth $6.8M on SEC Form 4. In the last 12 months: 5 sales ($570K).
2 sales (5% 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 option exercises (15 filings), grants and awards (12 filings), shares withheld for taxes (7 filings), gifts (5 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 APLS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.