Common Stock, par value $0.01 per share

TRANSACT TECHNOLOGIES INC

One Hamden Center, Hamden, CT, 06518

This Schedule 13D is being filed jointly by: (i) Harbert Discovery Fund, LP, a Delaware limited partnership (the "Fund"), (ii) Harbert Discovery Fund GP, LLC, a Delaware limited liability company (the "Fund GP"), (iii) Harbert Fund Advisors, Inc., an Alabama corporation ("HFA"), (iv) Harbert Management Corporation, an Alabama corporation ("HMC"), (v) Jack Bryant, a United States citizen, (vi) Kenan Lucas, a United States citizen, and (vii) Raymond Harbert, a United States citizen. Each of the Fund, the Fund GP, HFA, HMC, Mr. Bryant, Mr. Lucas and Mr. Harbert are referred to as a "Reporting Person" and collectively as the "Reporting Persons." Each of the Reporting Persons is party to that certain Joint Filing Agreement attached hereto as Exhibit A. Accordingly, the Reporting Persons are hereby filing a joint Schedule 13D. The Fund is a private investment fund. The Fund GP is the Fund's general partner. HFA is an investment adviser registered with the United States Securities and Exchange Commission and the investment adviser to the Fund. HMC Is the parent of HFA. Mr. Lucas is the Managing Director and Portfolio Manager of the Fund GP. Mr. Bryant is an Executive Vice President and Senior Managing Director of HMC. Mr. Harbert is the Chairman and Chief Executive Officer of HMC and HFA. Set forth on Exhibit B attached hereto is the name and present principal occupation or employment, principal business address and citizenship of the executive officers and directors of HFA and HMC. To the best of the Reporting Persons' knowledge, except as otherwise set forth herein, none of the persons listed on Exhibit B beneficially owns any securities of the Issuer or is a party to any contract, agreement or understanding required to be disclosed herein.

The principal business address for each of the Reporting Persons is 2100 Third Avenue North, Suite 600, Birmingham, Alabama 35203.

The principal business of the Fund is purchasing, holding and selling securities for investment purposes. The principal business of the Fund GP is serving as the general partner of the Fund. The principal business of HMC and its wholly-owned subsidiary HFA is serving as an alternative asset management firm to various private funds, including the Fund. The principal occupation of Mr. Lucas is serving as the Managing Director and Portfolio Manager of the Fund GP and as the portfolio manager for other clients. The principal occupation of Mr. Bryant is serving as an Executive Vice President and Senior Managing Director of HMC. The principal occupation of Mr. Harbert is serving as the Chairman and Chief Executive Officer of HMC and HFA.

No Reporting Person or any person listed on Exhibit B has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, Federal or state securities laws or finding any violation with respect to such laws.

As of the date hereof, HFA, HMC, Raymond Harbert, the Fund GP, the Fund, Jack Bryant and Kenan Lucas may be deemed to be the beneficial owners of 429,993 Shares, constituting 4.3% of the Shares, based upon 10,092,326* Shares outstanding as of the date hereof.

HFA has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 429,993 Shares; has the sole power to dispose or direct the disposition of 0 Shares; and has the shared power to dispose or direct the disposition of 429,993 Shares. HMC has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 429,993 Shares; has the sole power to dispose or direct the disposition of 0 Shares; and has the shared power to dispose or direct the disposition of 429,993 Shares. The Fund GP has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 429,993 Shares; has the sole power to dispose or direct the disposition of 0 Shares; and has the shared power to dispose or direct the disposition of 429,993 Shares. The Fund has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 429,993 Shares; has the sole power to dispose or direct the disposition of 0 Shares; and has the shared power to dispose or direct the disposition of 429,993 Shares. Jack Bryant has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 429,993 Shares; has the sole power to dispose or direct the disposition of 0 Shares; and has the shared power to dispose or direct the disposition of 429,993 Shares. Kenan Lucas has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 429,993 Shares; has the sole power to dispose or direct the disposition of 0 Shares; and has the shared power to dispose or direct the disposition of 429,993 Shares. Raymond Harbert has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 429,993 Shares; has the sole power to dispose or direct the disposition of 0 Shares; and has the shared power to dispose or direct the disposition of 429,993 Shares. *This outstanding Shares figure reflects the number of outstanding Shares on July 31, 2025, as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the SEC on August 12, 2025.

The transactions effected in the Shares since the last Schedule 13D filed by the Reporting Persons on September 4, 2025 are set forth in Exhibit C.

Not applicable.

September 22, 2025