Herm Rosenman Insider Trading Activity

Corporate InsiderDirector · CIK 1230057

Total trades

$11.0M

Total volume

Dec 12, 2025

Last activity

NTRA

Natera, Inc.

Herm Rosenman has been net-selling over the last 12 months with 0 purchases and 4 sales across 1 company.

NTRA is the most-traded position with 4 trades. The largest single transaction was a sale of NTRA for $5.0M on Dec 12, 2025.

Performance Scorecard

Forward stock performance after each transaction by Herm Rosenman. 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	—	-3.3%	0%	4
90 days	—	+16.5%	100%	4
120 days	—	+11.4%	100%	4

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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NTRA · Natera, Inc.

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	ROLE
Dec 12, 2025	NTRA	Sell	14,372	$226.62	$3.3M	Director
Dec 12, 2025	NTRA	Sell	21,910	$227.35	$5.0M	Director
Dec 12, 2025	NTRA	Sell	11,987	$228.49	$2.7M	Director
Dec 12, 2025	NTRA	Sell	150	$229.09	$34K	Director