Klein Matthew B. Insider Trading Activity

Corporate InsiderDirector · CIK 1808968

Total trades

$4.3M

Total volume

May 21, 2026

Last activity

PTC THERAPEUTICS, INC.

Klein Matthew B. has been net-selling over the last 12 months with 0 purchases and 14 sales across 2 different companies.

PTCT is the most-traded position with 13 trades. The largest single transaction was a sale of PTCT for $620K on Dec 30, 2025.

Performance Scorecard

Forward stock performance after each transaction by Klein Matthew B.. 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	—	+0.1%	78%	9
90 days	—	+3.6%	71%	7
120 days	—	+2.7%	83%	6

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

Price & Trades

Pro: Trade Markers

🔒 Subscribe to see trade entries

Pro members see exactly when Klein Matthew B. bought and sold PTCT.

Upgrade to Pro

Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	ROLE
May 21, 2026	CLPT	Sell	16,000	$11.59	$185K	Director
May 14, 2026	PTCT	Sell	7,221	$73.08	$528K	CEO
May 14, 2026	PTCT	Sell	2,100	$73.08	$153K	CEO
May 14, 2026	PTCT	Sell	679	$73.06	$50K	CEO
May 14, 2026	PTCT	Sell	2,572	$72.46	$186K	CEO
Apr 21, 2026	PTCT	Sell	2,850	$70.91	$202K	CEO
Mar 12, 2026	PTCT	Sell	2,662	$64.08	$171K	CEO
Feb 18, 2026	PTCT	Sell	7,371	$69.36	$511K	CEO
Jan 8, 2026	PTCT	Sell	2,514	$76.45	$192K	CEO
Jan 7, 2026	PTCT	Sell	3,016	$77.48	$234K	CEO
Jan 6, 2026	PTCT	Sell	5,149	$76.95	$396K	CEO
Dec 30, 2025	PTCT	Sell	8,089	$76.64	$620K	CEO
Dec 2, 2025	PTCT	Sell	3,428	$79.07	$271K	CEO
Aug 5, 2025	PTCT	Sell	10,739	$51.74	$556K	CEO