Ian T Clark Insider Trading Activity

Corporate InsiderDirector · CIK 1336504

Total trades

$12.0M

Total volume

May 20, 2026

Last activity

Guardant Health, Inc.

Ian T Clark has been net-selling over the last 12 months with 0 purchases and 7 sales across 2 different companies.

GH is the most-traded position with 4 trades. The largest single transaction was a sale of OLMA for $5.7M on Dec 19, 2025.

Performance Scorecard

Forward stock performance after each transaction by Ian T Clark. 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	—	+3.1%	88%	8
90 days	—	+25.2%	86%	7
120 days	—	+21.3%	86%	7

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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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
May 20, 2026	GH	Sell	6,876	$106.90	$735K	−69.8%	Director
Dec 19, 2025	OLMA	Sell	29,904	$28.83	$862K	−11.3%	Director
Dec 19, 2025	OLMA	Sell	193,056	$29.71	$5.7M	−82.2%	Director
Dec 19, 2025	OLMA	Sell	41,840	$30.48	$1.3M	−100.0%	Director
Dec 5, 2025	GH	Sell	8,156	$106.67	$870K	−21.2%	Director
Dec 5, 2025	GH	Sell	17,055	$107.27	$1.8M	−56.3%	Director
Dec 5, 2025	GH	Sell	3,400	$108.05	$367K	−25.7%	Director
Jun 17, 2025 Filed 3d late	GH	Sell	6,672	$48.38	$323K	−40.4%	Director