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SCHEDULE 13D/A 0001437749-22-021511 0001651542 XXXXXXXX LIVE 8 Common Stock, par value $0.001 per share 01/30/2026 false 0001378590 10807Q700 Bridgeline Digital, Inc. 100 TRADE CENTER, SUITE G-700 WOBURN MA 01801 Roger "Ari" Kahn (781) 376-5555 C/O Bridgeline Digital, Inc. 100 Sylvan Road, Suite G700 Woburn MA 01801 0001651542 N Kahn Roger E. PF OO N X1 2649233.00 544.00 2649233.00 544.00 2649777.00 N 19.6 IN Common Stock, par value $0.001 per share Bridgeline Digital, Inc. 100 TRADE CENTER, SUITE G-700 WOBURN MA 01801 This Amendment No. 8 ("Amendment No. 8") amends the statement on Schedule 13D originally filed by Roger "Ari" Kahn with the United States Securities and Exchange Commission (the "SEC") on August 30, 2022, as amended by Amendment No. 1, filed with the SEC on September 20, 2022, Amendment No. 2, filed with the SEC on February 2, 2023, Amendment No. 3, filed with the SEC on March 15, 2023, Amendment No. 4, filed with the SEC on June 21, 2023, Amendment No. 5, filed with the SEC on September 19, 2023, Amendment No. 6, filed with the SEC on August 22, 2024, and Amendment No. 7, filed with the SEC on August 28, 2025 (collectively, the "Report"). This Amendment No. 8 relates to the issued and outstanding shares of common stock, par value $0.001 per share (the "Common Stock"), of Bridgeline Digital, Inc., a Delaware corporation (the "Issuer"). The principal executive offices of the Issuer are located at 100 Sylvan Road, Suite G700, Woburn, Massachusetts. Information contained in the Report remains effective except to the extent that it is amended, restated, or superseded by the information contained in this Amendment No. 8. All capitalized terms used herein and not otherwise defined in this Amendment No. 8 have the meaning set forth in the Report. Item 3 of the Report is hereby amended and supplemented by adding the following information: On September 30, 2025, Mr. Kahn received a restricted stock award of 169,429 shares of Issuer Common Stock pursuant to the Issuer's 2025 Stock Incentive Plan (the "2025 Plan"), of which 57,098 shares were withheld by the Issuer to satisfy Mr. Kahn's tax withholding obligations, resulting in a net issuance to Mr. Kahn of 112,331 shares of Issuer Common Stock. On December 30, 2025, Mr. Kahn exercised a stock option to purchase 1,000 shares of Issuer Common Stock at an exercise price of $0.81 per share, of which 685 shares were delivered by Mr. Kahn to satisfy the exercise price. On January 30, 2026, Mr. Kahn received a restricted stock award of 300,000 shares of Issuer Common Stock pursuant to the Issuer's 2025 Plan. Item 4 of the Report is hereby amended and supplemented to incorporate by reference the disclosure made under Item 3. As of the date of this Amendment No. 8, Mr. Kahn beneficially owns 2,649,777 shares of Issuer Common Stock (comprised of (i) 1,709,979 shares of Issuer Common Stock (including 544 shares owned by Mr. Kahn's spouse), and (ii) options to acquire 939,798 shares of Issuer Common Stock which have vested or which will vest within 60 days of February 3, 2026, which number of shares represents approximately 19.6% of the outstanding Issuer Common Stock based on 12,599,879 shares issued and outstanding as of January 30, 2026. The percentage of ownership reported in this Item 5 was calculated in accordance with Rule 13d-3(d)(1)(i) promulgated under the Securities Exchange Act of 1934, as amended. Mr. Kahn may be deemed to have the sole power to vote or direct the vote, or to dispose or direct the disposition, of an aggregate of 2,649,233 shares of Issuer Common Stock. For the purposes hereof, Mr. Kahn may be deemed to beneficially own an aggregate of 544 shares of Issuer Common Stock owned by his spouse. Except as described in Item 3, which is hereby incorporated by reference, Mr. Kahn has not effected any transaction in Issuer Common Stock during the past 60 days. Not applicable. Not applicable. Kahn Roger E. Roger "Ari" Kahn Roger "Ari" Kahn 02/03/2026