Gross Mario Insider Trading Activity

Corporate InsiderChief Supply Chain Officer · CIK 2069180

Total trades

$880K

Total volume

May 20, 2026

Last activity

AMRZ

Amrize Ltd

Gross Mario has been net-buying over the last 12 months with 8 purchases and 0 sales across 1 company.

AMRZ is the most-traded position with 8 trades. The largest single transaction was a purchase of AMRZ for $234K on Aug 8, 2025.

Performance Scorecard

Forward stock performance after each transaction by Gross Mario. 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	+11.3%	—	100%	8
90 days	-0.4%	—	60%	5
120 days	+3.5%	—	60%	5

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 20, 2026	AMRZ	Buy	1,200	$48.63	$58K	+3.6%	Chief Supply Chain Officer
May 19, 2026	AMRZ	Buy	1,800	$49.47	$89K	+5.8%	Chief Supply Chain Officer
May 19, 2026	AMRZ	Buy	1,000	$48.63	$49K	+3.1%	Chief Supply Chain Officer
Mar 13, 2026	AMRZ	Buy	2,000	$55.39	$111K	+7.2%	Chief Supply Chain Officer
Mar 13, 2026	AMRZ	Buy	1,200	$55.13	$66K	+4.0%	Chief Supply Chain Officer
Aug 13, 2025	AMRZ	Buy	3,000	$49.63	$149K	+14.8%	Chief Supply Chain Officer
Aug 11, 2025	AMRZ	Buy	2,600	$47.75	$124K	+14.7%	Chief Supply Chain Officer
Aug 8, 2025	AMRZ	Buy	5,000	$46.78	$234K	+39.6%	Chief Supply Chain Officer