Barrett Business Services (BBSI) director adds 1,000 shares in open-market buys

Rhea-AI Filing Summary

Barrett Business Services director buys additional shares on open market. Director Mark Steven Finn purchased a total of 1,000 shares of Barrett Business Services common stock in two open-market transactions at prices of $27.8800 and $27.9250 per share.

Following these purchases, Finn directly owns 18,943 shares of the company’s common stock, indicating a modest increase in his personal stake.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Finn Mark Steven

(Last) (First) (Middle)

8100 NE PARKWAY DRIVE, SUITE 200

(Street)

VANCOUVER WASHINGTON 98662

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BARRETT BUSINESS SERVICES INC [ BBSI ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/19/2026		P		500	A	$27.925	18,443	D
Common Stock	03/20/2026		P		500	A	$27.88	18,943	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Anthony Harris, as attorney-in-fact	03/20/2026
	** 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 4 (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 4: SEC 1474 (03-26)

FAQ

What insider transaction did BBSI director Mark Steven Finn report?

Mark Steven Finn reported buying 1,000 shares of Barrett Business Services common stock. The purchases occurred in two open-market trades of 500 shares each at prices of $27.8800 and $27.9250 per share.

At what prices did Mark Steven Finn buy BBSI shares?

He bought BBSI shares at $27.8800 and $27.9250 per share. Each price applied to a 500-share open-market purchase, totaling 1,000 shares acquired across the two reported transactions.

How many BBSI shares does Mark Steven Finn own after these trades?

After the reported purchases, Mark Steven Finn directly owns 18,943 shares of Barrett Business Services common stock. This figure reflects his holdings immediately following the second 500-share open-market transaction disclosed in the Form 4.

Were the recent BBSI insider transactions open-market purchases?

Yes. Both reported transactions are coded as open-market purchases of common stock. Each trade involved 500 shares, and the Form 4 describes them as purchases in open-market or private transactions at specified per-share prices.

Does the Form 4 show any BBSI insider share sales?

No. The Form 4 only reports purchases, with two buy transactions totaling 1,000 shares. The transaction summary shows zero sell transactions and a net-buy position based on the data provided in the filing.