31 transactions on file (3 open-market purchases and 0 open-market sales on this page).
| Date | Insider | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-06-16 | Poloni Lara PRESIDENT Open-market purchase | Open-market purchase | +4,224 | $70.63 | +298.34K | 153,446 |
| 2026-05-14 | Kapoor Gaurav CHIEF FINANCIAL OFFICER (PAO) Open-market purchase | Open-market purchase | +1,420 | $71.12 | +100.99K | 88,053 |
| 2026-05-14 | Rudd Troy CHIEF EXECUTIVE OFFICER · Director Open-market purchase | Open-market purchase | +4,225 | $71.02 | +300.06K | 142,207 |
| 2026-03-03 | Wolfenbarger Janet Carol Director Grant / award | Grant / award | +2,002 | $0.00 | +0 | 38,822 |
| 2026-03-03 | van 't Noordende Alexander M Director Grant / award | Grant / award | +2,002 | $0.00 | +0 | 12,423 |
26 more transactions are on Measure
The assistant answers from what ACM has actually filed: 18 annual reports filed with the SEC, 31 Form 4 filings from the last year, 13F positions from the 1 tracked investor who hold it and 3 funds that hold it. Every figure in a reply links to the filing it came from, so an answer can be checked rather than believed.
Pressing one answers it here, from ACM's filings and figures. One a day without an account; a free account has its own, and no card.
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Source
From SEC Form 4 filings, filed by officers, directors and 10%-owners within two business days of a transaction. “Indirect” holdings (a trust, an LLC, a family member) are included and not distinguished from direct ones in this table.
Past transactions say nothing about future ones, and none of this is investment advice.
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Every Form 4 ACM insiders file, not just the latest handful, with vesting and tax withholding struck out so what's left reads as a decision.
Every filingMeasure
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Each stake priced at the quarter it was filed, and diffed against the quarter before: who added, who trimmed, who left.
Every position they holdMeasure
Ask what a run of filings adds up to
Whether this is one decision or a pattern, and how it compares with ACM's own history of insider activity.
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