Wellington Management Group and related entities filed an amended Schedule 13G reporting beneficial ownership of 5,182,538 shares of Clean Harbors, Inc. common stock, representing 9.7% of the class as of the stated event date.
The filing shows shared voting power over 4,325,963 shares and shared dispositive power over 5,182,538 shares for several Wellington entities, with no sole voting or dispositive power. The securities are held of record by investment-advisory clients, none of which individually holds more than five percent of the class.
Wellington certifies the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Clean Harbors.
Positive
None.
Negative
None.
Insights
Wellington reports a sizable, passive 9.7% stake in Clean Harbors.
The filing shows Wellington entities collectively beneficially owning 5,182,538 Clean Harbors shares, or 9.7% of the common stock. Voting and dispositive powers are shared across Wellington affiliates, with no sole voting or dispositive authority disclosed.
The shares are owned of record by advisory clients of Wellington investment advisers, and no single client is identified as holding more than five percent. Wellington certifies that the position is held in the ordinary course of business and not to change or influence control, which characterizes this as a passive institutional ownership disclosure under Schedule 13G.
Future ownership changes by Wellington or its clients, if large enough to cross regulatory thresholds, would be expected to appear in subsequent beneficial ownership reports for periods including December 31, 2025 and beyond.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 15)
Clean Harbors, Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
184496107
(CUSIP Number)
12/31/2025
(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.
184496107
1
Names of Reporting Persons
Wellington Management Group LLP
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
MASSACHUSETTS
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
4,325,963.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
5,182,538.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
5,182,538.00
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)
9.7 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP No.
184496107
1
Names of Reporting Persons
Wellington Group Holdings LLP
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
0.00
6
Shared Voting Power
4,325,963.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
5,182,538.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
5,182,538.00
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)
9.7 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP No.
184496107
1
Names of Reporting Persons
Wellington Investment Advisors Holdings LLP
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
0.00
6
Shared Voting Power
4,325,963.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
5,182,538.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
5,182,538.00
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)
9.7 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP No.
184496107
1
Names of Reporting Persons
Wellington Management Company LLP
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
0.00
6
Shared Voting Power
4,036,402.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
4,209,359.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
5,182,538.00
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)
7.9 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Clean Harbors, Inc.
(b)
Address of issuer's principal executive offices:
42 Longwater Drive, Norwell MA 9149
Item 2.
(a)
Name of person filing:
Wellington Management Group LLP
Wellington Group Holdings LLP
Wellington Investment Advisors Holdings LLP
Wellington Management Company LLP
(b)
Address or principal business office or, if none, residence:
c/o Wellington Management Company LLP, 280 Congress Street, Boston MA 02210
(c)
Citizenship:
Wellington Management Group LLP - Massachusetts
Wellington Group Holdings LLP - Delaware
Wellington Investment Advisors Holdings LLP - Delaware
Wellington Management Company LLP - Delaware
(d)
Title of class of securities:
Common Stock
(e)
CUSIP No.:
184496107
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
See the responses to Item 9 on the attached cover pages.
(b)
Percent of class:
9.70 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
0
(ii) Shared power to vote or to direct the vote:
See the responses to Item 6 on the attached cover pages.
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
See the responses to Item 8 on the attached cover pages.
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.
The securities as to which this Schedule is filed are owned of record by clients of one or more investment advisers identified in Item 7 directly or indirectly owned by Wellington Management Group LLP. Those clients have the right to receive, or the power to direct the receipt of, dividends from, or the proceeds from the sale of, such securities. No such client is known to have such right or power with respect to more than five percent of this class of securities, except as follows:
Not Applicable.
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.
Pursuant to the instructions in Item 7 of Schedule 13G, the following lists the identity and Item 3 classification of each relevant entity that beneficially owns shares of the security class being reported on this Schedule 13G.
Wellington Group Holdings LLP - HC
Wellington Investment Advisors LLP - HC
Wellington Management Global Holdings, Ltd. - HC
One or more of the following investment advisers (the "Wellington Investment Advisers"):
Wellington Management Company LLP - IA
Wellington Management Canada LLC - IA
Wellington Management Singapore Pte Ltd - IA
Wellington Management Hong Kong Ltd - IA
Wellington Management International Ltd - IA
Wellington Management Japan Pte Ltd - IA
Wellington Management Australia Pty Ltd - IA
The securities as to which this Schedule is filed by Wellington Management Group LLP, as parent holding company of certain holding companies and the Wellington Investment Advisers, are owned of record by clients of the Wellington Investment Advisers. Wellington Investment Advisors Holdings LLP controls directly, or indirectly through Wellington Management Global Holdings, Ltd., the Wellington Investment Advisers. Wellington Investment Advisors Holdings LLP is owned by Wellington Group Holdings LLP. Wellington Group Holdings LLP is owned by Wellington Management Group LLP.
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.
How many Clean Harbors (CLH) shares does Wellington report owning?
Wellington entities report beneficial ownership of 5,182,538 shares of Clean Harbors common stock. This stake represents a significant institutional position and is disclosed across multiple related Wellington limited liability partnerships acting as parent holding and investment advisory entities.
What percentage of Clean Harbors (CLH) does Wellington’s stake represent?
Wellington reports that its beneficial ownership represents 9.7% of Clean Harbors’ common stock class. This percentage is stated under Item 4(b) and is based on the aggregate shares beneficially owned as of the relevant ownership date in the Schedule 13G/A filing.
Does Wellington have sole or shared voting power over Clean Harbors (CLH) shares?
The Wellington entities report no sole voting power and shared voting power over 4,325,963 shares for most reporting persons. They also report shared dispositive power over 5,182,538 shares, indicating decisions are made collectively or for advisory clients, not unilaterally by one entity.
Is Wellington’s Clean Harbors (CLH) ownership considered passive or for control purposes?
Wellington certifies the shares were acquired and are held in the ordinary course of business and not for changing or influencing control of Clean Harbors. The filing specifies they are not held in connection with any transaction intended to affect control, aligning with a passive Schedule 13G status.
Who ultimately benefits from Wellington’s Clean Harbors (CLH) share holdings?
The filing states the securities are owned of record by clients of one or more Wellington investment advisers. These clients have rights to dividends and sale proceeds. No individual client is known to have such rights over more than five percent of the Clean Harbors common stock class.
Which Wellington entities are listed as reporting persons for Clean Harbors (CLH)?
The Schedule 13G/A lists Wellington Management Group LLP, Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP, and Wellington Management Company LLP as reporting persons, describing a control chain over various Wellington investment advisers serving the underlying client accounts.
