David O. Watson is CLO at Apellis Pharmaceuticals, Inc. (APLS). They have made 23 open-market trades across 1 company since 2018, most recently 2026-05-14.
CIK 0001657719
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 23 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| APLS | 41,250 | $1.7M |
Shares reported on the most recent Form 4, priced at the 2026-05-14 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| APLS | SELL | 2026-01-22 | 2026-01-23 | $21.77 | $171K | +7.2% | +4.1% | +89.6% |
| APLS | SELL | 2026-01-20 | 2026-01-21 | $19.79 | $49K | +9.0% | +6.3% | +95.4% |
| APLS | SELL | 2026-01-13 | 2026-01-15 | $22.19 | $128K | +12.4% | +5.1% | +99.0% |
| APLS | SELL · 10b5-1 | 2025-12-16 | 2025-12-18 | $24.49 | $245K | +2.7% | -16.3% | -26.8% |
| APLS | SELL · 10b5-1 | 2025-11-17 | 2025-11-18 | $20.06 | $100K | +8.1% | +24.8% | +10.0% |
| APLS | SELL · 10b5-1 | 2025-10-16 | 2025-10-17 | $25.22 | $126K | +19.5% | -20.0% | -18.3% |
| APLS | SELL · 10b5-1 | 2025-09-16 | 2025-09-18 | $24.34 | $122K | -3.3% | +15.6% | +7.6% |
| APLS | SELL | 2025-09-10 | 2025-09-12 | $26.17 | $1.0M | -8.7% | -3.2% | +0.1% |
| APLS | SELL · 10b5-1 | 2025-08-18 | 2025-08-19 | $27.80 | $139K | +4.4% | -11.4% | -23.9% |
| APLS | SELL · 10b5-1 | 2025-07-16 | 2025-07-18 | $19.55 | $98K | -3.8% | +38.4% | +22.2% |
| APLS | SELL · 10b5-1 | 2025-06-16 | 2025-06-18 | $18.77 | $94K | +0.1% | +9.1% | +33.4% |
| APLS | SELL | 2025-03-05 | 2025-03-06 | $25.10 | $280K | -2.4% | -20.8% | -26.0% |
| APLS | SELL | 2025-01-29 | 2025-01-30 | $29.52 | $21K | -5.8% | -20.6% | -36.6% |
| APLS | SELL | 2025-01-22 | 2025-01-23 | $30.43 | $202K | -6.4% | -10.8% | -43.1% |
| APLS | SELL | 2025-01-17 | 2025-01-21 | $29.96 | $132K | -3.4% | -5.6% | -39.9% |
| APLS | SELL | 2025-01-13 | 2025-01-14 | $28.70 | $285K | +5.2% | -3.1% | -31.8% |
| APLS | SELL | 2024-12-11 | 2024-12-13 | $34.24 | $171K | -0.7% | -13.9% | -26.6% |
| APLS | SELL | 2024-02-12 | 2024-02-13 | $67.77 | $106K | +7.0% | -15.8% | -35.8% |
| APLS | SELL | 2024-01-29 | 2024-01-31 | $64.14 | $116K | +6.8% | +0.7% | -30.4% |
| APLS | SELL | 2024-01-22 | 2024-01-23 | $65.00 | $272K | -6.3% | +1.3% | -28.6% |
| APLS | SELL | 2024-01-16 | 2024-01-17 | $66.81 | $567K | -1.8% | +3.3% | -22.2% |
| APLS | SELL | 2023-12-19 | 2023-12-20 | $57.22 | $223K | +7.7% | +14.5% | +2.1% |
| APLS | SELL · 10b5-1 | 2023-07-03 | 2023-07-06 | $89.98 | $1.5M | -54.0% | -72.8% | -56.7% |
| APLS | SELL | 2022-06-22 | 2022-06-23 | $44.51 | $445K | +1.1% | +15.6% | +33.8% |
| APLS | SELL | 2022-04-25 | 2022-04-27 | $50.00 | $250K | -21.4% | -8.9% | +19.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.