Updated Jul 16, 2026
DENELSKY STEPHEN J has filed 1 SEC Form 4 filing across 1 company in the last 90 days — buying. Lifetime open-market purchases: $49K.

| Role | Director |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-11 | HBIO | HARVARD BIOSCIENCE INC | A — Grant or award | 16.6K | $0.00 | |
| 2026-03-18 | HBIO | HARVARD BIOSCIENCE INC | P — Open-market purchase | 10.0K | $4.87 | $49K |
| 2025-09-05 | HBIO | HARVARD BIOSCIENCE INC | A — Grant or award | 110.0K | $0.00 |
DENELSKY STEPHEN J is a corporate insider — currently tracked as Director of HARVARD BIOSCIENCE INC (HBIO). InsiderAlpha tracks every SEC Form 4 filing in real time.
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 1 open-market purchases ($49K) and 0 open-market sales () across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live DENELSKY STEPHEN J profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.