Comparable stake leader
BlackRock, Inc.
SEC ownership of AECOM
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000868857.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
14 May 2026
- Public ticker
- ACM on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
14 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000868857
- Issuer location
- Dallas, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of AECOM (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
14 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 10%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 10%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
10%
PRIMECAP MANAGEMENT CO/CA/
7.2%
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
Troy Rudd
0.31%
Lara Poloni
0.12%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
10%
from 13D/G
|
$1,336,794,108
15,760,364 shares
|
— | 31 Mar 2026 |
| PRIMECAP MANAGEMENT CO/CA/ |
13D/G
13F
Company
|
7.2%
|
$1,096,432,703
9,580,852 shares
|
-$206,075,541 | 30 Jun 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$572,550,013
6,750,177 shares
|
$0 | 31 Mar 2026 |
| Troy Rudd |
3/4/5
CHIEF EXECUTIVE OFFICER, Director
|
0.31%
|
$32,257,264
403,439 shares
|
-$6,048,134 | 14 May 2026 |
| Lara Poloni |
3/4/5
PRESIDENT
|
0.12%
|
$14,688,204
149,330 shares
|
-$1,701,135 | 15 Dec 2025 |
| Gaurav Kapoor |
3/4/5
CHIEF FINANCIAL OFFICER (PAO)
|
0.07%
|
$6,276,813
88,224 shares
|
+$100,990 | 14 May 2026 |
| David Y. Gan |
3/4/5
CHIEF LEGAL OFFICER
|
0.03%
|
$4,095,835
42,126 shares
|
-$1,514,889 | 15 Dec 2025 |
| Janet C. Wolfenbarger |
3/4/5
Director
|
0.03%
|
$3,829,790
38,822 shares
|
— | 03 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$9,163,168.
Buys
$401,050
Insiders: 2
Sells
$9,564,218
Insiders: 3
Net
-$9,163,168
Shares: -80,487
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 5,645
Shares: 86,132
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 5,645 | 0 | $401,050 | $0 | +$401,050 |
| 3-6 | 0 | 27,035 | $0 | $2,622,924 | -$2,622,924 |
| 6-9 | 0 | 6,000 | $0 | $593,100 | -$593,100 |
| 9-12 | 0 | 53,097 | $0 | $6,348,194 | -$6,348,194 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-18 of 18 reporting-owner rows connected to AECOM. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest Forms 3/4/5 holder
Troy Rudd
Net 12M change
-$9,163,168
Latest report
14 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Troy Rudd | CHIEF EXECUTIVE OFFICER, Director | $32,257,264 | -$6,048,134 | -16% | Mixed | 14 May 2026 |
| Lara Poloni | President | $14,688,204 | -$1,701,135 | -10% | Mixed | 15 Dec 2025 |
| Gaurav Kapoor | Chief Financial Officer (Pao) | $6,276,813 | +$100,990 | +1.6% | Mixed | 14 May 2026 |
| David Y. Gan | Chief Legal Officer | $4,095,835 | -$1,514,889 | -27% | Mixed | 15 Dec 2025 |
| Clarence T. Schmitz | Director | $3,959,976 | Mixed | 01 Mar 2022 | ||
| Janet C. Wolfenbarger | Director | $3,829,790 | Mixed | 03 Mar 2026 | ||
| Douglas Stotlar | Director | $3,828,014 | Mixed | 03 Mar 2026 | ||
| Brad W. Buss | Director | $2,812,807 | Mixed | 03 Mar 2026 | ||
| Daniel R. Tishman | Director | $2,371,052 | Mixed | 03 Mar 2026 | ||
| Todd Battley | Chief Strategy Officer | $1,518,531 | Mixed | 05 Jan 2023 | ||
| Shirley A. Adams | Chief Human Resources Officer | $1,374,553 | Mixed | 15 Dec 2022 | ||
| Alexander M. van 'T Noordende | Director | $1,225,528 | Mixed | 03 Mar 2026 | ||
| Lydia H. Kennard | Director | $1,061,123 | Mixed | 19 Mar 2024 | ||
| Robert G. Card | Director | $1,047,642 | Mixed | 01 Mar 2023 | ||
| Kristy Pipes | Director | $850,658 | Mixed | 03 Mar 2026 | ||
| Jacqueline C. Hinman | Director | $831,907 | Mixed | 24 Feb 2022 | ||
| Derek J. Kerr | Director | $602,554 | Mixed | 03 Mar 2026 | ||
| Diane C. Creel | Director | $463,154 | Mixed | 01 Mar 2023 |
Recent insider transactions for AECOM
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Gaurav Kapoor | ACM | Common Stock | Purchase | 1.64% | $100,990 | $71.12 | 1,420 | 88,053 | 14 May 2026 | Direct |
| Troy Rudd | ACM | Common Stock | Purchase | 3.06% | $300,060 | $71.02 | 4,225 | 142,207 | 14 May 2026 | Direct |
| Janet C. Wolfenbarger | ACM | Common Stock | Award | 5.44% | 2,002 | 38,822 | 03 Mar 2026 | Direct | ||
| Alexander M. van 'T Noordende | ACM | Common Stock | Award | 19.2% | 2,002 | 12,423 | 03 Mar 2026 | Direct | ||
| Daniel R. Tishman | ACM | Common Stock | Award | 9.24% | 2,002 | 23,677 | 03 Mar 2026 | Direct | ||
| Douglas W. Stotlar | ACM | Common Stock | Award | 6.11% | 2,236 | 38,804 | 03 Mar 2026 | Direct | ||
| Derek J. Kerr | ACM | Common Stock | Award | 119.5% | 2,002 | 3,677 | 03 Mar 2026 | Direct | ||
| Kristy Pipes | ACM | Common Stock | Award | 30.2% | 2,002 | 8,623 | 03 Mar 2026 | Direct | ||
| Brad W. Buss | ACM | Common Stock | Award | 7.55% | 2,002 | 28,513 | 03 Mar 2026 | Direct | ||
| Troy Rudd | ACM | Common Stock | Gift | -0.23% | -600 | 259,756 | 23 Dec 2025 | by TN Rudd Investments, LP | ||
| David Y. Gan | ACM | Common Stock | Sale | -18.6% | $921,789 | $97.01 | -9,502 | 41,549 | 17 Dec 2025 | Direct |
| Lara Poloni | ACM | Common Stock | Sale | -10.5% | $1,701,135 | $97.02 | -17,533 | 149,222 | 17 Dec 2025 | Direct |
| David Y. Gan | ACM | Common Stock | Sale | -10.5% | $593,100 | $98.85 | -6,000 | 51,051 | 15 Dec 2025 | Direct |
| David Y. Gan | ACM | Common Stock | Tax liability | -15.6% | -10,530 | 57,051 | 15 Dec 2025 | Direct | ||
| David Y. Gan | ACM | Common Stock | Award | 43.8% | 20,590 | 67,581 | 15 Dec 2025 | Direct | ||
| David Y. Gan | ACM | Common Stock | Options Exercise | 14.6% | 5,976 | 46,991 | 15 Dec 2025 | Direct | ||
| David Y. Gan | ACM | Restricted Stock Units | Options Exercise | -100% | -5,976 | 0 | 15 Dec 2025 | Direct | ||
| Gaurav Kapoor | ACM | Common Stock | Tax liability | -16.4% | -16,940 | 86,633 | 15 Dec 2025 | Direct | ||
| Gaurav Kapoor | ACM | Common Stock | Award | 57% | 37,599 | 103,573 | 15 Dec 2025 | Direct | ||
| Gaurav Kapoor | ACM | Common Stock | Options Exercise | 17% | 9,562 | 65,974 | 15 Dec 2025 | Direct | ||
| Gaurav Kapoor | ACM | Restricted Stock Units | Options Exercise | -100% | -9,562 | 0 | 15 Dec 2025 | Direct | ||
| Lara Poloni | ACM | Common Stock | Tax liability | -7.45% | -13,425 | 166,755 | 15 Dec 2025 | Direct | ||
| Lara Poloni | ACM | Common Stock | Award | 28.5% | 39,949 | 180,180 | 15 Dec 2025 | Direct | ||
| Lara Poloni | ACM | Common Stock | Options Exercise | 7.71% | 10,040 | 140,231 | 15 Dec 2025 | Direct | ||
| Lara Poloni | ACM | Restricted Stock Units | Options Exercise | -100% | -10,040 | 0 | 15 Dec 2025 | Direct | ||
| Troy Rudd | ACM | Common Stock | Tax liability | -28.2% | -48,556 | 123,837 | 15 Dec 2025 | Direct | ||
| Troy Rudd | ACM | Common Stock | Award | 368.3% | 135,581 | 172,393 | 15 Dec 2025 | Direct | ||
| Troy Rudd | ACM | Common Stock | Options Exercise | 36,812 | 36,812 | 15 Dec 2025 | Direct | |||
| Troy Rudd | ACM | Restricted Stock Units | Options Exercise | -100% | -36,812 | 0 | 15 Dec 2025 | Direct | ||
| Daniel R. Tishman | ACM | Common Stock | Gift | -56.3% | -27,935 | 21,675 | 05 Sep 2025 | Direct | ||
| Troy Rudd | ACM | Common Stock | Sale | -100% | $6,348,194 | $119.56 | -53,097 | 0 | 15 Aug 2025 | Direct |
| Troy Rudd | ACM | Common Stock | Options Exercise | 53,097 | 53,097 | 15 Aug 2025 | Direct | |||
| Troy Rudd | ACM | Employee Stock Option | Options Exercise | -100% | -53,097 | 0 | 15 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.