Steven J. Demetriou insider trades: Amentum Holdings (AMTM) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Steven reports to the SEC






and 4 more companies
Open-market buys and sales
30 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 12, 2025 | AMTM | ↑ Buy | 100,000 | $20.81 | $2.1M | Direct | Feb 14, 2025 (2d) |
| Sep 12, 2024 | ACA | ↑ Buy | 6,000 | $87.70 | $526K | Direct | Sep 12, 2024 (0d) |
| Aug 1, 2024 | J | ↓ Sell10b5-1 | 7,000 | $146.88 | $1.0M | Direct | Aug 5, 2024 (4d) |
| Jul 1, 2024 | J | ↓ Sell10b5-1 | 7,000 | $139.94 | $980K | Direct | Jul 3, 2024 (2d) |
| Jun 3, 2024 | J | ↓ Sell10b5-1 | 7,000 | $139.43 | $976K | Direct | Jun 5, 2024 (2d) |
| May 1, 2024 | J | ↓ Sell10b5-1 | 7,000 | $143.86 | $1.0M | Direct | May 3, 2024 (2d) |
| Apr 1, 2024 | J | ↓ Sell10b5-1 | 7,000 | $153.20 | $1.1M | Direct | Apr 3, 2024 (2d) |
| Mar 1, 2024 | J | ↓ Sell10b5-1 | 7,000 | $146.65 | $1.0M | Direct | Mar 5, 2024 (4d) |
| Dec 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $127.75 | $852K | Direct | Dec 19, 2023 (4d) |
| Nov 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $136.62 | $911K | Direct | Nov 17, 2023 (2d) |
| Oct 16, 2023 | J | ↓ Sell10b5-1 | 6,666 | $138.97 | $926K | Direct | Oct 18, 2023 (2d) |
| Sep 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $132.81 | $885K | Direct | Sep 19, 2023 (4d) |
| Aug 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $136.52 | $910K | Direct | Aug 17, 2023 (2d) |
| Jul 17, 2023 | J | ↓ Sell10b5-1 | 6,666 | $122.99 | $820K | Direct | Jul 19, 2023 (2d) |
| Jun 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $115.10 | $767K | Direct | Jun 21, 2023 (6d) |
| May 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $115.20 | $768K | Direct | May 17, 2023 (2d) |
| Apr 17, 2023 | J | ↓ Sell10b5-1 | 6,666 | $115.24 | $768K | Direct | Apr 19, 2023 (2d) |
| Mar 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $116.77 | $778K | Direct | Mar 17, 2023 (2d) |
| Feb 15, 2023 | J | ↓ Sell10b5-1 | 6,666 | $121.94 | $813K | Direct | Feb 17, 2023 (2d) |
| Jan 17, 2023 | J | ↓ Sell10b5-1 | 6,666 | $125.95 | $840K | Direct | Jan 19, 2023 (2d) |
| Nov 18, 2022 | J | ↓ Sell | 102,259 | $124.46 | $12.7M | Direct | Nov 18, 2022 (0d) |
| Nov 17, 2021 | J | ↓ Sell | 98,739 | $145.76 | $14.4M | Direct | Nov 19, 2021 (2d) |
| Nov 30, 2020 | J | ↓ Sell10b5-1 | 60,000 | $106.54 | $6.4M | Direct | Dec 1, 2020 (1d) |
| Aug 15, 2016 | KRA | ↓ Sell | 1,850 | $30.57 | $57K | Direct | Aug 16, 2016 (1d) |
| Mar 10, 2014 | FWLT | ↓ Sell | 1,656 | $31.83 | $53K | Direct | Mar 11, 2014 (1d) |
| Mar 8, 2013 | FWLT | ↓ Sell | 611 | $20.75 | $13K | Direct | Mar 12, 2013 (4d) |
| Mar 8, 2012 | FWLT | ↓ Sell | 336 | $23.16 | $8K | Direct | Mar 12, 2012 (4d) |
| Jul 1, 2011 | KRA | ↓ Sell | 8,700 | $40.00 | $348K | Direct | Jul 6, 2011 (5d) |
| Dec 31, 2010 | FWLT | ↓ Sell | 255 | $34.13 | $9K | Direct | Jan 3, 2011 (3d) |
| Sep 4, 2008 | FWLT | ↑ Buy | 1,000 | $44.58 | $45K | Direct | Sep 4, 2008 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Steven J. Demetriou's insider trades
Steven J. Demetriou is Executive Chair at Amentum Holdings (AMTM). Since Sep 4, 2008, Steven has reported 3 open-market purchases worth $2.7M and 27 sales worth $50.1M on SEC Form 4. There have been no open-market trades in the last 12 months.
19 sales (45% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (108 filings), shares withheld for taxes (37 filings), option exercises (19 filings), gifts (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every AMTM insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.