Aecom
ACM- Exchange
- NYSE
- Industry
- Services-Engineering Services
- SEC CIK
- 0000868857
No open-market purchases or sales by Aecom insiders were filed in the last 90 days; 579 institutions reported holding it in 13F filings for Q2 2026, worth $8.34B in total; no superinvestor holds it.
Holders of 5% or more of ACM
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Aecom, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 10.10%13.1M shares | +0.30 ppfrom 9.80% | Apr 17, 20252 filings | Feb 6, 2026 | SEC |
| Primecap Management Co | 13G/A | 7.24%9.58M shares | −1.35 ppfrom 8.59% | Feb 12, 20216 filings | Aug 14, 2025 | SEC |
| Barrow Hanley Mewhinney & Strauss LLC | 13G | 6.10%7.81M shares | New | Nov 12, 20261 filing | Nov 12, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.22%6.75M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
26 Schedule 13D and 13G filings on Aecom, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 12, 202610:31 AM ET | Barrow Hanley Mewhinney & Strauss LLC | 13G | 6.10%7.81M shares | New | Sep 30, 2026 | SEC |
| Apr 29, 20264:46 PM ET | Vanguard Capital Management LLC | 13G | 5.22%6.75M shares | New | Mar 31, 2026 | SEC |
| Mar 26, 20263:13 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 6, 202612:08 PM ET | BlackRock, Inc. | 13G/A | 10.10%13.1M shares | +0.30 ppfrom 9.80% | Jan 31, 2026 | SEC |
| Aug 14, 202512:41 PM ET | Primecap Management Co | 13G/A | 7.24%9.58M shares | −1.35 ppfrom 8.59% | Jun 30, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 9.80%13.0M shares | – | Mar 31, 2025 | SEC |
| Feb 13, 20257:17 PM ET | Primecap Management Co | 13G/A | 8.59%11.4M shares | – | Dec 31, 2024 | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2024 | Primecap Management Co | 13G/AOld format | – | – | – | SEC |
| Jan 23, 20244:14 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 20237:06 PM ET | Alliancebernstein L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 20239:02 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Primecap Management Co | 13G/AOld format | – | – | – | SEC |
| Feb 7, 202312:01 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 27, 2023 | Starboard Value LPSuperinvestorStarboard Value | 13D/AOld format | – | – | – | SEC |
| Feb 14, 20221:54 PM ET | Alliancebernstein L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Primecap Management Co | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20225:08 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Primecap Management Co | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 5, 20216:05 PM ET | Alliancebernstein L.P. | 13GOld format | – | New | – | SEC |
| Jan 28, 20215:55 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
14 notices from officers, directors and other affiliates planning to sell Aecom shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Dec 17, 20254:02 PM ET | Lara PoloniOfficer | 17.5K | $1.70M | Dec 17, 202510b5-1 | MERRILL LYNCH | SEC |
| Dec 17, 20254:01 PM ET | David GanOfficer | 9.50K | $921.8K | Dec 17, 202510b5-1 | MERRILL LYNCH | SEC |
| Dec 15, 20254:05 PM ET | David GanOfficer | 6.00K | $593.1K | Dec 15, 202510b5-1 | MERRILL LYNCH | SEC |
| Aug 15, 20254:07 PM ET | Rudd TroyOfficer | 53.1K | $6.35M | Aug 15, 202510b5-1 | MERRILL LYNCH | SEC |
| Dec 17, 20247:42 PM ET | Gan David Y.Officer | 9.40K | $1.04M | Dec 17, 202410b5-1 | MERRILL LYNCH | SEC |
| Dec 16, 20248:54 PM ET | Gan David Y.Officer | 11.5K | $1.28M | Dec 16, 202410b5-1 | MERRILL LYNCH | SEC |
| Nov 6, 20242:24 PM ET | Kapoor GauravOfficer | 42.4K | $4.89M | Nov 6, 202410b5-1 | MERRILL LYNCH | SEC |
| Oct 1, 20247:43 PM ET | Rudd TroyOfficer | 100.0K | $10.3M | Oct 1, 202410b5-1 | MERRILL LYNCH | SEC |
| Aug 15, 20244:21 PM ET | Rudd TroyOfficer | 34.7K | $3.35M | Aug 15, 202410b5-1 | MERRILL LYNCH | SEC |
| May 10, 20244:52 PM ET | Stotlar DouglasDirector | 7.18K | $671.3K | May 10, 2024 | Merrill Lynch | SEC |
| Dec 15, 20234:06 PM ET | Rudd TroyOfficer | 25.0K | $2.32M | Dec 15, 202310b5-1 | MERRILL LYNCH | SEC |
| Dec 14, 20234:18 PM ET | Poloni LaraOfficer | 30.7K | $2.84M | Dec 14, 2023 | Merrill Lynch | SEC |
| Nov 16, 20234:04 PM ET | Stotlar DouglasDirector | 9.64K | $836.5K | Nov 16, 2023 | MERRILL LYNCH | SEC |
| Aug 15, 20234:26 PM ET | Rudd TroyOfficer | 78.1K | $6.89M | Aug 15, 202310b5-1 | MERRILL LYNCH | SEC |