Clark Stephen S Insider Trading Activity

Corporate InsiderChief People Officer · CIK 1632531

Total trades

$254K

Total volume

May 5, 2026

Last activity

AMRZ

Amrize Ltd

Clark Stephen S has been net-buying over the last 12 months with 11 purchases and 0 sales across 1 company.

AMRZ is the most-traded position with 11 trades. The largest single transaction was a purchase of AMRZ for $57K on Aug 15, 2025.

Performance Scorecard

Forward stock performance after each transaction by Clark Stephen S. 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	+4.8%	—	100%	11
90 days	-3.9%	—	0%	10
120 days	+9.1%	—	100%	10

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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AMRZ · Amrize Ltd

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
May 5, 2026	AMRZ	Buy	2.152	$52.75	$113.518	+0.0%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	100	$51.63	$5K	—	Chief People Officer
Aug 15, 2025	AMRZ	Buy	70	$51.63	$4K	+70.0%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	22	$51.78	$1K	+12.9%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	367	$51.80	$19K	+125.7%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	301	$51.81	$16K	+45.7%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	1,000	$51.82	$52K	+104.2%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	1,040	$51.83	$54K	+53.1%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	500	$51.84	$26K	+16.7%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	1,100	$51.85	$57K	+31.4%	Chief People Officer
Aug 15, 2025	AMRZ	Buy	400	$51.86	$21K	+8.7%	Chief People Officer