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Frost Mark T profile photo

Mark T. Frost

CIK: 0001310262

Transaction Breakdown

Open Market Buys (P)1 (33.3%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (66.7%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

HARVARD BIOSCIENCE INC logo
HBIO

HARVARD BIOSCIENCE INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (3 total)

  • HARVARD BIOSCIENCE INC logo
    HBIO

    HARVARD BIOSCIENCE INC

    Mar 20, 2026
    Award(A)
    Direct
    30K shares-
  • HARVARD BIOSCIENCE INC logo
    HBIO

    HARVARD BIOSCIENCE INC

    Mar 16, 2026
    Purchase(P)
    Direct
    5K shares at avg. $5.00$25K
  • HARVARD BIOSCIENCE INC logo
    HBIO

    HARVARD BIOSCIENCE INC

    May 12, 2025
    Award(A)
    Direct
    100K shares-

1-3 of 3

About Frost Mark T

Frost Mark T (SEC CIK 0001310262) files insider reports with the SEC as Chief Financial Officer of HARVARD BIOSCIENCE INC (HBIO).

Signal8 holds 4 ownership filings by Frost Mark T (1 Form 3, 3 Form 4), filed between May 14, 2025 and Apr 1, 2026. Those filings report 3 transactions, from May 12, 2025 to Mar 20, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Frost Mark T's filings is in HOLLISTON, MA.

Recent filings by Frost Mark T

  • Mar 20, 2026: Grant or award of HBIO shares (Form 4, code A).
  • Mar 16, 2026: Open-market purchase of HBIO shares (Form 4, code P).
  • May 12, 2025: Grant or award of HBIO shares (Form 4, code A).

Other insiders filing for HARVARD BIOSCIENCE INC (HBIO)

How to read Form 4 transaction codes