X0306 4 2019-11-01 0 0001123494 HARVARD BIOSCIENCE INC HBIO 0001195340 EDRICK ALAN I C/O HARVARD BIOSCIENCE 84 OCTOBER HILL ROAD HOLLILSTON MA 01746 1 0 0 0 Common Stock 2019-11-01 4 A 0 600 0.00 A 31800 D Represents a deferred stock award of 600 restricted stock units which vest in full on December 31, 2019. This retainer award was granted under the Issuer's director compensation policy in connection with the director being added to the Audit Committee on October 31, 2019. The award is pro-rated in relation to service on the committee for the remainder of 2019. The number of shares of common stock subject to such retainer award is equal to the amount of cash that would have been received had the applicable retainer all been paid in cash, divided by the average daily closing market price of the Issuer's common stock for the month of August, rounded to the nearest 100 shares. Includes (a) a deferred stock award of 600 restricted stock units which vest in full on December 31, 2019 as described in footnote 1 above, (b) a deferred stock award of 5,800 which vest in full on December 31, 2019; and (c) 25,400 shares of common stock held by the Reporting Person. This form has been signed under power of attorney. /s/ Chad Porter, by power of attorney 2019-12-02