Insider Trading March 18, 2026

Harvard Bioscience Director Increases Stake with $48,700 Purchase

Director Stephen Denelsky buys 10,000 shares following recent reverse split as company outlines modest 2026 growth targets

By Priya Menon HBIO
Harvard Bioscience Director Increases Stake with $48,700 Purchase
HBIO

Stephen J. Denelsky, a director of Harvard Bioscience Inc. (NASDAQ: HBIO), purchased 10,000 shares on March 17, 2026, at $4.87 per share for a total of $48,700. The transaction comes after a 10-for-1 reverse stock split on March 13, 2026, and leaves Denelsky with 21,000 shares, including 11,000 restricted stock units that vest on September 5, 2026. The company reported Q4 2025 revenue of $23.7 million and provided 2026 guidance for modest revenue and adjusted EBITDA growth; analysts remain divided on the outlook.

Key Points

  • Director Stephen J. Denelsky bought 10,000 shares on March 17, 2026, at $4.87 per share, totaling $48,700.
  • Harvard Bioscience reported Q4 2025 revenue of $23.7 million with a 59.77% gross margin, and guided 2026 revenue to $88 million to $90 million with adjusted EBITDA of $8.6 million to $8.9 million.
  • The company executed a 10-for-1 reverse stock split on March 13, 2026, with restricted stock units adjusted accordingly; liquidity metrics show a current ratio of 2.2.

Stephen J. Denelsky, who serves on the board of Harvard Bioscience Inc. (NASDAQ: HBIO), purchased 10,000 shares of the company on March 17, 2026, at a price of $4.87 per share. The total consideration for the stake was $48,700. At the time of reporting, the company's shares were trading at $4.74 and were down 27% year-to-date, although analysts continue to point to a $6.00 price target.

Following the purchase, Denelsky directly holds 21,000 shares in Harvard Bioscience. That total includes 11,000 restricted stock units, which the filing indicates will fully vest on September 5, 2026. The restricted stock units were adjusted to reflect the company 10-for-1 reverse stock split that took effect on March 13, 2026, according to the filing.

The filing also highlights the company's short-term liquidity position. Data cited from InvestingPro notes that Harvard Bioscience has liquid assets in excess of its short-term obligations, reflected in a current ratio of 2.2.


On the operating front, Harvard Bioscience released fourth-quarter 2025 results showing revenue of $23.7 million. That figure exceeded the midpoint of the company's guidance range for the quarter but represented a 3.2% decline versus the prior year. Gross margin for the period was reported at 59.77%, the highest level recorded in seven quarters.

For full-year 2026, management is guiding to revenue growth of 2% to 4%, which translates to a range of $88 million to $90 million. The firm expects gross margins to be between 58% and 60%, and adjusted EBITDA growth of 6% to 10%, or $8.6 million to $8.9 million.

Analyst coverage reflects mixed sentiment. Benchmark recently adjusted its price target to $6.00 from $0.60 following the company's 1-for-10 reverse stock split and retained a Speculative Buy rating. In its commentary, Benchmark cited the company's strategic priorities around manufacturing consolidation and anticipated revenue gains from the New Product Innovation pipeline. The same firm had earlier cut its price target to $0.60 from $2.00 amid concerns tied to NIH budget dynamics and what it described as a conservative outlook for 2026. These changes illustrate divergent analyst views on the company's trajectory.


This insider transaction, the recent reverse split and the published 2026 guidance together provide investors with updated data points on Harvard Bioscience's financial position and management priorities. The filing documents and reported quarterly results form the factual basis for assessing the company's short-term liquidity and its revenue and margin assumptions for the year ahead.

Risks

  • Shares were trading down 27% year-to-date at $4.74, indicating market pressure on the stock and potential volatility in the small-cap life sciences segment.
  • Analyst viewpoints are mixed - Benchmark cited NIH budget concerns and issued prior target reductions, underscoring uncertainty tied to external funding and the company's conservative 2026 outlook.
  • Restricted stock units held by the director will not fully vest until September 5, 2026, which limits immediate insider-driven supply-side effects but introduces timing considerations for shareholder composition.

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