Sec Form 4 Filing - TAGLICH MICHAEL N @ Bridgeline Digital, Inc. - 2021-12-21

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

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person TAGLICH MICHAEL N 2. Issuer Name and Ticker or Trading Symbol Bridgeline Digital, Inc. [ BLIN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 100 SYLVAN RD. SUITE G-700 3. Date of Earliest Transaction (MM/DD/YY) 12/21/2021 (Street) WOBURN, MA01801 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 12/21/2021 X 2,379 A $ 3.875 90,312( 1 )( 2 ) D Common Stock 35( 3 ) I By spouse

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Common Stock Warrants (right to buy) $ 3.875 12/21/2021 X 2,379 02/08/2021 02/04/2026 Common Stock 2,379 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other TAGLICH MICHAEL N 100 SYLVAN RD. SUITE G-700 WOBURN, MA01801 X Signatures /s/ Michael N. Taglich 12/23/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )For the purposes of this Form 4, the number of shares of common stock of Bridgeline Digital, Inc (the "Company") beneficially owned by the Reporting Person is the number of shares in Table 1 Column 4 (2,379) plus 87,933 shares of common stock beneficially owned by the Reporting Person prior to this reported transaction calculated as follows: (x) 360,229 shares (representing the total beneficial ownership of the Reporting Person reflected in the beneficial ownership table included in the Company's Form 10-K, filed with the commission on December 20, 2021) minus (y)(i) 195,662 shares of common stock underlying currently exercisable warrants; (ii) 37,708 shares of common stock underlying currently exercisable options; (iii) 2 shares of common stock underlying currently exercisable warrants owned by the Reporting Person's spouse (the ownership of which the Reporting Person disclaims); ( 2 )(iv) 35 shares of common stock owned by the Reporting Person's spouse (the ownership of which the Reporting Person disclaims); and (v) 38,889 shares of common stock issuable upon the conversion of the Company's Series C Preferred Stock. ( 3 )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 the securities for the purpose of Section 16 or for any other purpose.

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).

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