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AECOM Major Shareholding Notification 2020

Dec 9, 2020

30349_mrq_2020-12-09_8549488f-cdcc-44c4-9b36-f0aa65d7fb83.zip

Major Shareholding Notification

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SC 13D/A 1 sc13da106297155_12082020.htm AMENDMENT NO. 1 TO THE SCHEDULE 13D

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 1) 1

AECOM

(Name of Issuer)

Common Stock , $0.01 par value

(Title of Class of Securities)

00766T100

(CUSIP Number)

JEFFREY C. SMITH

STARBOARD VALUE LP

777 Third Avenue, 18 th Floor

New York, New York 10017

(212) 845-7977

STEVE WOLOSKY, ESQ.

ANDREW FREEDMAN, ESQ.

OLSHAN FROME WOLOSKY LLP

1325 Avenue of the Americas

New York, New York 10019

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

December 8, 2020

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨ .

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7 for other parties to whom copies are to be sent.

Field: Rule-Page

Field: /Rule-Page

1 The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes ).

Field: Page; Sequence: 1

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 7,771,992
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
7,771,992
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
7,771,992
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.2%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 2

2

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
CAYMAN ISLANDS
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 3,496,800
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
3,496,800
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
3,496,800
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.3%
14 TYPE OF REPORTING PERSON
CO

Field: Page; Sequence: 3

3

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE AND OPPORTUNITY S LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 624,748
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
624,748
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
624,748
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 4

4

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE AND OPPORTUNITY C LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 360,962
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
360,962
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
360,962
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 5

5

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD P FUND LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
CAYMAN ISLANDS
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 657,464
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
657,464
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
657,464
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 6

6

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE P GP LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 657,464
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
657,464
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
657,464
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 7

7

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE R LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 1,018,426
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
1,018,426
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,018,426
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 8

8

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE AND OPPORTUNITY MASTER FUND L LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
CAYMAN ISLANDS
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 313,391
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
313,391
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
313,391
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 9

9

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE L LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 313,391
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
313,391
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
313,391
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 10

10

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE R GP LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 1,331,817
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
1,331,817
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,331,817
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 11

11

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD LEADERS YANKEE LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 364,945
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
364,945
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
364,945
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 12

12

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD LEADERS FUND LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 364,945
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
364,945
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
364,945
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 13

13

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD LEADERS SELECT X LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 379,302
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
379,302
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
379,302
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 14

14

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD LEADERS SELECT X GP LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 379,302
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
379,302
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
379,302
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 15

15

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE A LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 744,247
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
744,247
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
744,247
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 16

16

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE A GP LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 744,247
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
744,247
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
744,247
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 17

17

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE X MASTER FUND LTD
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
WC
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
CAYMAN ISLANDS
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 479,797
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
479,797
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
479,797
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
14 TYPE OF REPORTING PERSON
CO

Field: Page; Sequence: 18

18

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD VALUE GP LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 7,771,992
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
7,771,992
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
7,771,992
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.2%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 19

19

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD PRINCIPAL CO LP
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 7,771,992
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
7,771,992
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
7,771,992
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.2%
14 TYPE OF REPORTING PERSON
PN

Field: Page; Sequence: 20

20

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
STARBOARD PRINCIPAL CO GP LLC
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY 7,771,992
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING - 0 -
PERSON WITH 9 SOLE DISPOSITIVE POWER
7,771,992
10 SHARED DISPOSITIVE POWER
- 0 -
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
7,771,992
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.2%
14 TYPE OF REPORTING PERSON
OO

Field: Page; Sequence: 21

21

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
JEFFREY C. SMITH
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
USA
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY - 0 -
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING 7,771,992
PERSON WITH 9 SOLE DISPOSITIVE POWER
- 0 -
10 SHARED DISPOSITIVE POWER
7,771,992
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
7,771,992
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.2%
14 TYPE OF REPORTING PERSON
IN

Field: Page; Sequence: 22

22

CUSIP No. 00766T100

Field: /Page

NAME OF REPORTING PERSON
PETER A. FELD
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐
(b) ☐
3 SEC USE ONLY
4 SOURCE OF FUNDS
OO
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
6 CITIZENSHIP OR PLACE OF ORGANIZATION
USA
NUMBER OF 7 SOLE VOTING POWER
SHARES
BENEFICIALLY - 0 -
OWNED BY 8 SHARED VOTING POWER
EACH
REPORTING 7,771,992
PERSON WITH 9 SOLE DISPOSITIVE POWER
- 0 -
10 SHARED DISPOSITIVE POWER
7,771,992
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
7,771,992
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.2%
14 TYPE OF REPORTING PERSON
IN

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CUSIP No. 00766T100

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The following constitutes Amendment No. 1 to the Schedule 13D filed by the undersigned (“Amendment No. 1”). This Amendment No. 1 amends the Schedule 13D as specifically set forth herein.

Item 4. Purpose of Transaction .

Item 4 is hereby amended to add the following:

Starboard Value LP (together with its affiliates, “Starboard”) and the Issuer have engaged in discussions regarding the composition of the Issuer’s Board of Directors (the “Board”) and certain other matters. Following such discussions, the Issuer announced on December 8, 2020, that Starboard and the Issuer have agreed on the nominations of Diane C. Creel and Sander van’t Noordende as new independent directors for election to the Board at the Issuer’s 2021 Annual Meeting of Stockholders (the “2021 Annual Meeting”), which is anticipated to occur on February 24, 2021. The Issuer has agreed to include Ms. Creel and Mr. van’t Noordende as nominees in its proxy statement in connection with the 2021 Annual Meeting. Messrs. Steven A. Kandarian and Robert J. Routs have both notified the Issuer that they will not stand for re-election to the Board at the 2021 Annual Meeting. The Issuer agreed to nominate all of the remaining directors for re-election to the Board at the 2021 Annual Meeting, including the three directors appointed pursuant to the 2019 agreement between the Issuer and Starboard. With these changes to the Board, seven of the eleven Board members will have been appointed within the past year.

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CUSIP No. 00766T100

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SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: December 9, 2020

STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD By: Starboard Value LP, its investment manager Starboard Value and Opportunity S LLC By: Starboard Value LP, its manager Starboard Value and Opportunity C LP By: Starboard Value R LP, its general partner STARBOARD VALUE AND OPPORTUNITY MASTER FUND L LP By: Starboard Value L LP, its general partner Starboard Value L LP By: Starboard Value R GP LLC, its general partner STARBOARD VALUE R LP By: Starboard Value R GP LLC, its general partner STARBOARD P FUND LP By: Starboard Value P GP LLC, its general partner STARBOARD VALUE P GP LLC By: Starboard Value R LP, its member STARBOARD LEADERS YANKEE LLC By: Starboard Value A LP, its managing member Starboard Leaders Fund LP By: Starboard Value A LP, its general partner Starboard Leaders Select X LP By: Starboard Leaders Select X GP LLC, its general partner STARBOARD VALUE A LP By: Starboard Value A GP LLC, its general partner STARBOARD VALUE X MASTER FUND LTD By: Starboard Value LP, its investment manager STARBOARD VALUE LP By: Starboard Value GP LLC, its general partner STARBOARD VALUE GP LLC By: Starboard Principal Co LP, its member STARBOARD PRINCIPAL CO LP By: Starboard Principal Co GP LLC, its general partner STARBOARD PRINCIPAL CO GP LLC Starboard Value A GP LLC Starboard Value R GP LLC Starboard Leaders Select X GP LLC

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CUSIP No. 00766T100

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By:
Name: Jeffrey C. Smith
Title: Authorized Signatory
/s/ Jeffrey C. Smith
Jeffrey C. Smith
Individually and as attorney-in-fact for Peter A. Feld

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