Joseph Klein III Insider Trading Activity

Corporate InsiderDirector · CIK 1206369

Total trades

$7.8M

Total volume

May 1, 2026

Last activity

IONS

IONIS PHARMACEUTICALS INC

Joseph Klein III has been net-selling over the last 12 months with 0 purchases and 10 sales across 1 company.

IONS is the most-traded position with 10 trades. The largest single transaction was a sale of IONS for $1.7M on Sep 3, 2025.

Performance Scorecard

Forward stock performance after each transaction by Joseph Klein III. 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	—	-1.4%	60%	10
90 days	—	-8.6%	38%	8
120 days	—	-8.9%	50%	6

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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IONS · IONIS PHARMACEUTICALS INC

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
May 1, 2026	IONS	Sell	8,680	$73.35	$637K	−41.1%	Director
May 1, 2026	IONS	Sell	1,431	$74.45	$107K	−11.5%	Director
Apr 1, 2026	IONS	Sell	20,105	$75.50	$1.5M	−60.3%	Director
Apr 1, 2026	IONS	Sell	2,216	$75.95	$168K	−16.7%	Director
Mar 3, 2026	IONS	Sell	13,526	$79.17	$1.1M	−41.8%	Director
Mar 3, 2026	IONS	Sell	6,794	$80.00	$543K	−36.1%	Director
Mar 3, 2026	IONS	Sell	1,012	$80.82	$82K	−8.4%	Director
Nov 25, 2025 Filed 3d late	IONS	Sell	4,000	$80.00	$320K	−100.0%	Director
Sep 3, 2025	IONS	Sell	28,000	$60.00	$1.7M	−100.0%	Director
Sep 3, 2025	IONS	Sell	28,000	$60.00	$1.7M	−100.0%	Director