DENELSKY STEPHEN J
Director
PurchaseAlert
- Shares
- 10,000
- Price
- $4.87
- Value
- $48,700
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•19 filings
HBIO
HARVARD BIOSCIENCE INC
No net buying or selling imbalance over the last 3 months
No net buyers or sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found 2 CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
$0.00
0 buyers · 0 sellers
12-month purchases
$202,354
4 distinct insiders
12-month sales
$0.00
0 distinct insiders
Highlighted alerts
5
0 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
2 executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
23
Raw transactions
Everything returned by the filing
5
Voluntary view
P/S trades after deterministic checks
14
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- A
- Shares
- 16,556
- Price
- $0.00
- Footnotes
- 3
Represents an award of 16,556 restricted stock units that vests in full (i) immediately prior to the Company's next annual meeting; or (ii) one year from the date of grant, whichever is earlier. Includes (a) the award described in footnote (1) above and (b) 42,113 shares of common stock beneficially owned by the Reporting Person. On March 13, 2026, the common stock of Harvard Bioscience, Inc. underwent a reverse stock split in a ratio of 10-for-1. The 42,113 shares referenced in Footnote 2(b) were previously reported as covering 110,000 restricted stock units (which have now vested) and 311,126 shares of common stock beneficially owned by the Reporting Person. These numbers have been adjusted to reflect the stock split that occurred on March 13, 2026.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Snider William
Director
PurchaseAlert
- Shares
- 8,475
- Price
- $4.85
- Value
- $41,104
Frost Mark T
Chief Financial Officer
PurchaseAlert
- Shares
- 5,000
- Price
- $5.00
- Value
- $25,000
Snider William
Director
PurchaseAlert
- Shares
- 12,525
- Price
- $4.99
- Value
- $62,500
Duke John D
Chief Executive Officer
PurchaseAlert
- Shares
- 5,000
- Price
- $5.01
- Value
- $25,050
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Mar 17, 2026 | DENELSKY STEPHEN J Director | Purchase | 10,000 | $4.87 | $48,700 | |
| Mar 17, 2026 | Snider William Director | Purchase | 8,475 | $4.85 | $41,104 | |
| Mar 16, 2026 | Frost Mark T Chief Financial Officer | Purchase | 5,000 | $5.00 | $25,000 | |
| Mar 16, 2026 | Snider William Director | Purchase | 12,525 | $4.99 | $62,500 | |
| Mar 16, 2026 | Duke John D Chief Executive Officer | Purchase | 5,000 | $5.01 | $25,050 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.