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

Rhea-AI Filing Summary

Barrett Business Services director Mark Steven Finn made an open-market purchase of 1,000 shares of common stock at $28.60 per share. This transaction increased his direct ownership to 20,943 shares of BBSI common stock.

Insider Trade Summary

Net Buyer: 1,000 shares ($28,600)

Net Buy 1 txn

Insider Finn Mark Steven

Role null

Bought 1,000 shs ($29K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	1,000	$28.60	$29K

Holdings After Transaction: Common Stock — 20,943 shares (Direct, null)

Footnotes (1)

Key Figures

Shares purchased: 1,000 shares Purchase price: $28.60 per share Shares owned after transaction: 20,943 shares +1 more

4 metrics

Shares purchased 1,000 shares Open-market purchase of BBSI common stock

Purchase price $28.60 per share Price paid in the reported transaction

Shares owned after transaction 20,943 shares Total direct BBSI holdings post-transaction

Net buy shares 1,000 shares Net buy direction in transaction summary

Key Terms

open-market purchase, Form 4, non-derivative, insider trading disclosure

4 terms

open-market purchase financial

"made an open-market purchase of 1,000 shares of common stock"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

Form 4 regulatory

"as disclosed in the Form 4 filing"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

non-derivative financial

"It reports only a single non-derivative open-market purchase"

insider trading disclosure regulatory

"open-market transaction in the Form 4 insider trading disclosure"

Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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)
05/13/2026

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	05/13/2026		P		1,000	A	$28.6	20,943	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	05/13/2026
	** 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?

Director Mark Steven Finn reported buying 1,000 shares of Barrett Business Services common stock in an open-market transaction. The shares were purchased at a price of $28.60 per share, as disclosed in the Form 4 filing.

At what price did the BBSI director buy the 1,000 shares?

The 1,000 Barrett Business Services shares were purchased at $28.60 each. This per-share price comes directly from the reported open-market transaction in the Form 4 insider trading disclosure filed with regulators.

How many BBSI shares does Mark Steven Finn hold after this transaction?

After the reported purchase, Mark Steven Finn directly holds 20,943 BBSI common shares. This total ownership figure includes the new 1,000 shares acquired and is stated as the post-transaction holding in the Form 4 filing.

Was the recent BBSI insider transaction a buy or a sell?

The recent Barrett Business Services insider transaction was a buy. Director Mark Steven Finn executed an open-market purchase of 1,000 common shares, with no reported sales in the same Form 4 filing.

Does the BBSI Form 4 show any derivative or option exercises?

The Form 4 for Barrett Business Services does not show any derivative or option exercises. It reports only a single non-derivative open-market purchase of common stock, with no derivative transactions listed in the derivativeSummary section.