BlackRock reports 13,088,821 ACM (ACM) shares held, a 10.1% stake

Rhea-AI Filing Summary

BlackRock, Inc. filed an amended Schedule 13G/A reporting a significant institutional stake in the issuer’s common stock. BlackRock reports beneficial ownership of 13,088,821 shares, representing 10.1% of the outstanding class. It holds sole voting power over 12,273,912 shares and sole dispositive power over 13,088,821 shares, with no shared voting or dispositive authority.

The filing states these securities are held in the ordinary course of business, not for the purpose or effect of changing or influencing control of the issuer, except for activities solely in connection with a nomination under the relevant proxy rule.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 14)

AECOM

(Name of Issuer)

Common Stock

(Title of Class of Securities)

00766T100

(CUSIP Number)

01/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 00766T100

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 12,273,912.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 13,088,821.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

13,088,821.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

10.1 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: AECOM
(b)	Address of issuer's principal executive offices: 13355 NOEL ROAD, SUITE 400 DALLAS TX 75240
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 00766T100
Item 4.	Ownership
(a)	Amount beneficially owned: 13088821
(b)	Percent of class: 10.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 12273912
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 13088821
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of AECOM. No one person's interest in the common stock of AECOM is more than five percent of the total outstanding common shares.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	02/06/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7

FAQ

What does BlackRock’s Schedule 13G/A filing reveal about ACM?

The filing shows BlackRock beneficially owns 13,088,821 ACM common shares, or 10.1% of the class. It reports sole voting power over 12,273,912 shares and sole dispositive power over all 13,088,821 shares, with no shared authority reported.

Is BlackRock seeking control of ACM according to this Schedule 13G/A?

BlackRock states the shares were acquired and are held in the ordinary course of business, not to change or influence control of the issuer. It notes they are not held in connection with any control-focused transaction, other than activities solely linked to a specific proxy nomination rule.

How much of ACM’s stock does BlackRock report owning?

BlackRock reports beneficial ownership of 13,088,821 ACM common shares, which represents 10.1% of the outstanding class. This level of ownership requires disclosure on Schedule 13G/A as a significant institutional holder exceeding the five percent reporting threshold.

What voting and dispositive powers over ACM shares does BlackRock report?

BlackRock reports sole power to vote or direct the vote for 12,273,912 ACM shares and sole power to dispose or direct disposition of 13,088,821 shares. It reports zero shared voting power and zero shared dispositive power, indicating centralized authority within its reporting business units.

Who can receive dividends or sale proceeds from the ACM shares held by BlackRock?

The filing notes various persons have rights to receive dividends or sale proceeds from the ACM common stock managed by BlackRock. However, it specifies that no single person’s interest exceeds five percent of the issuer’s total outstanding common shares, reflecting diversified underlying ownership.