Watson David O. Insider Trading Activity

Corporate InsiderGeneral Counsel · CIK 1657719

Total trades

$1.7M

Total volume

Jan 22, 2026

Last activity

APLS

Apellis Pharmaceuticals, Inc.

Watson David O. has been net-selling over the last 12 months with 0 purchases and 9 sales across 1 company.

APLS is the most-traded position with 9 trades. The largest single transaction was a sale of APLS for $523K on Sep 10, 2025.

Performance Scorecard

Forward stock performance after each transaction by Watson David O.. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	—	-3.0%	55%	11
90 days	—	-23.3%	36%	11
120 days	—	-14.6%	44%	9

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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APLS · Apellis Pharmaceuticals, Inc.

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
Jan 22, 2026	APLS	Sell	7,832	$21.77	$170K	−8.1%	General Counsel
Jan 20, 2026	APLS	Sell	2,475	$19.79	$49K	−2.5%	General Counsel
Jan 13, 2026	APLS	Sell	5,780	$22.19	$128K	−5.5%	General Counsel
Dec 16, 2025	APLS	Sell	5,000	$24.49	$122K	−4.6%	General Counsel
Nov 17, 2025	APLS	Sell	5,000	$20.06	$100K	−4.4%	General Counsel
Oct 16, 2025	APLS	Sell	5,000	$25.22	$126K	−4.2%	General Counsel
Sep 16, 2025	APLS	Sell	5,000	$24.34	$122K	−4.0%	General Counsel
Sep 10, 2025	APLS	Sell	20,000	$26.17	$523K	−28.5%	General Counsel
Aug 18, 2025	APLS	Sell	5,000	$27.80	$139K	−3.9%	General Counsel
Jul 16, 2025	APLS	Sell	5,000	$19.55	$98K	−3.7%	General Counsel
Jun 16, 2025	APLS	Sell	5,000	$18.77	$94K	−3.6%	General Counsel