Brookfield Business Partners (NYSE: BBU) director files initial Form 3 holdings

Rhea-AI Filing Summary

Brookfield Business Partners L.P. director Donald William Mackenzie filed a Form 3 reporting his existing ownership stake. He holds 6,715 Class A Exchangeable Subordinate Voting Shares of Brookfield Business Corporation and 13,430 Non-Voting Limited Partnership Units of Brookfield Business Partners L.P., all as direct holdings.

According to the disclosure, each Class A exchangeable share is exchangeable on a one-for-one basis into a Non-Voting Limited Partnership Unit of Brookfield Business Partners L.P. or its cash equivalent, with the form of payment determined at the partnership’s election. This filing records ownership; it does not show any new purchases or sales.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Mackenzie Donald William

(Last) (First) (Middle)

C/O BROOKFIELD BUSINESS PARTNERS L.P.

73 FRONT STREET, FIFTH FLOOR

(Street)

HAMILTON HM 12

(City) (State) (Zip)

BERMUDA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Brookfield Business Partners L.P. [ BBU ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Non-Voting Limited Partnership Units	13,430	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class A Exchangeable Subordinate Voting Shares(1)	(1)	(1)	Non-Voting Limited Partnership Units	6,715	(1)	D

Explanation of Responses:

1. Represents Class A Exchangeable Subordinate Voting Shares of Brookfield Business Corporation which are exchangeable into Non-Voting Limited Partnership Units of Brookfield Business Partners L.P. on a one-for-one basis (subject to adjustment to reflect certain capital events) or its cash equivalent (the form of payment to be determined at the election of Brookfield Business Partners L.P.).

Remarks:

Exhibit List - Exhibit 24 - Power of Attorney

	/s/ Arin Jonathan Silber, Attorney-in-Fact	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Brookfield Business Partners (BBU) Form 3 filing show?

The Form 3 shows director Donald William Mackenzie’s existing holdings in Brookfield Business Partners. He reports 6,715 Class A exchangeable shares and 13,430 Non-Voting Limited Partnership Units, all held directly, without indicating any recent purchases or sales.

How many Brookfield Business Partners (BBU) units does Mackenzie report owning?

Donald William Mackenzie reports owning 13,430 Non-Voting Limited Partnership Units of Brookfield Business Partners L.P. These units are held directly and represent part of his disclosed beneficial ownership as a director in the Form 3 filing.

What are the Class A exchangeable shares reported in BBU’s Form 3?

Mackenzie reports 6,715 Class A Exchangeable Subordinate Voting Shares of Brookfield Business Corporation. These shares are exchangeable into Non-Voting Limited Partnership Units of Brookfield Business Partners L.P. on a one-for-one basis or into a cash equivalent, at the partnership’s election.

Is there any buying or selling activity in this Brookfield Business Partners Form 3?

No, the Form 3 is an initial ownership report, not a trade notice. It lists Mackenzie’s direct holdings in exchangeable shares and partnership units but does not record any new purchases, sales, or other transactions in Brookfield Business Partners securities.

How do the exchangeable shares relate to BBU’s Non-Voting Limited Partnership Units?

Each Class A exchangeable share is exchangeable into one Non-Voting Limited Partnership Unit of Brookfield Business Partners L.P. or a cash equivalent. The partnership chooses whether to deliver units or cash when an exchange is requested, according to the filing footnote.

What does direct ownership mean in the Brookfield Business Partners (BBU) Form 3?

Direct ownership means the securities are held in Mackenzie’s own name, not through a trust or other entity. The Form 3 specifies his holdings as direct, clarifying that he personally holds the reported exchangeable shares and Non-Voting Limited Partnership Units.