Michael Ketslakh - 30 Jan 2026 Form 4 Insider Report for Bridgeline Digital, Inc. (BLIN)

Role: Director
Signature: /s/ Michael Ketslakh
Issuer symbol: BLIN
Transactions as of: 30 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 16 Mar 2026, 17:42:09 UTC
Previous filing: 30 Jun 2025
Next filing: 23 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Ketslakh Michael	Director	100 SYLVAN RD. SUITE G-700, WOBURN	/s/ Michael Ketslakh	16 Mar 2026	0002056677

Transactions Table

Type	Sym	Class	Transaction	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BLIN	Common Stock	Award	+22,500	+54%	$0.000000^*	63,986	30 Jan 2026	Direct
holding	BLIN	Common Stock					394,736	30 Jan 2026	By Michael V. Ketslakh Revocable Trust	F1
holding	BLIN	Common Stock					57,620	30 Jan 2026	By INV LLC	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares are held by the Michael V. Ketslakh Revocable Trust, of which the Reporting Person is the trustee and beneficiary. The foregoing disclosure regarding the Reporting Person's indirect beneficial ownership was unintentionally omitted from previous Form 4 filings.
F2	The Reporting Person is the Manager of INV LLC ("INV"). As such, the Reporting Person has voting and dispositive control over the shares owned by INV. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The foregoing disclosure regarding the Reporting Person's indirect beneficial ownership was unintentionally omitted from previous Form 4 filings.

Content

These shares are held by the Michael V. Ketslakh Revocable Trust, of which the Reporting Person is the trustee and beneficiary. The foregoing disclosure regarding the Reporting Person's indirect beneficial ownership was unintentionally omitted from previous Form 4 filings.

The Reporting Person is the Manager of INV LLC ("INV"). As such, the Reporting Person has voting and dispositive control over the shares owned by INV. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The foregoing disclosure regarding the Reporting Person's indirect beneficial ownership was unintentionally omitted from previous Form 4 filings.