Harold H. Shlevin - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Harold H. Shlevin has filed 1 SEC Form 4 filing across 1 company in the last 90 days - active on both sides. Lifetime open-market purchases: $8K. Lifetime open-market sales: $501K.
Profile
Harold H. Shlevin is a corporate insider at GALECTIN THERAPEUTICS INC (GALT). Shlevin has reported 6 insider filings with the SEC since 2024. The most recent filing was in June 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- GALECTIN THERAPEUTICS INC
Trading Pattern
InsiderAlpha's records for Harold H. Shlevin go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $8K (1 buy totaling $8K). The largest single buy on record is $8K of GALT in 2024. Sales side: 6 recorded sales totaling $501K, so the filing history runs sell-heavy by dollar value. 16 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Harold H. Shlevin has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at GALECTIN THERAPEUTICS INC (GALT) - 5 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-30 | GALT | GALECTIN THERAPEUTICS INC | S - Open-market sale [10b5-1] | 22.3K | $5.04 | $112K |
| 2026-06-30 | GALT | GALECTIN THERAPEUTICS INC | M - Option exercise [10b5-1] | 22.3K | $1.23 | $27K |
| 2026-06-30 | GALT | GALECTIN THERAPEUTICS INC | S - Open-market sale [10b5-1] | 7.7K | $5.00 | $39K |
| 2026-06-30 | GALT | GALECTIN THERAPEUTICS INC | M - Option exercise [10b5-1] | 7.7K | $1.23 | $10K |
| 2025-12-19 | GALT | GALECTIN THERAPEUTICS INC | S - Open-market sale [10b5-1] | 4.7K | $7.04 | $33K |
| 2025-12-19 | GALT | GALECTIN THERAPEUTICS INC | S - Open-market sale [10b5-1] | 19.8K | $7.04 | $139K |
| 2025-12-19 | GALT | GALECTIN THERAPEUTICS INC | M - Option exercise [10b5-1] | 20.0K | $1.98 | $40K |
| 2025-12-16 | GALT | GALECTIN THERAPEUTICS INC | S - Open-market sale [10b5-1] | 8.4K | $6.30 | $53K |
| 2025-12-16 | GALT | GALECTIN THERAPEUTICS INC | M - Option exercise [10b5-1] | 8.4K | $4.16 | $35K |
| 2025-12-16 | GALT | GALECTIN THERAPEUTICS INC | S - Open-market sale [10b5-1] | 19.8K | $6.27 | $124K |
| 2025-12-16 | GALT | GALECTIN THERAPEUTICS INC | M - Option exercise [10b5-1] | 19.8K | $4.16 | $82K |
| 2024-12-31 | GALT | GALECTIN THERAPEUTICS INC | P - Open-market purchase | 6.5K | $1.16 | $8K |
Companies - Last 90 Days
- GALECTIN THERAPEUTICS INC (GALT) - 1 filing, last 2026-06-30
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Harold H. Shlevin has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- 10X Fund, L.P. - $2.43M of GALT open-market activity in the last 12 months
- Khurram Jamil - $1.44M of GALT open-market activity in the last 12 months
- Jack W. Callicutt - $1.00M of GALT open-market activity in the last 12 months
- Joel Lewis - $710K of GALT open-market activity in the last 12 months
- Kevin D. Freeman - $20K of GALT open-market activity in the last 12 months
- Kary Eldred - $3K of GALT open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Stayce D. Harris
- Harrison Street Real Assets Fund LLC
- Haveli Investments, L.P.
- Stephen J. Hemsley
- Jeffrey Robert Hernandez
- Patrick J. Heron
- Michael Ho
- David Henry Hoffmann
Frequently Asked Questions
Who is Harold H. Shlevin?
Harold H. Shlevin is a corporate insider at GALECTIN THERAPEUTICS INC (GALT). Shlevin has reported 6 insider filings with the SEC since 2024. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Harold H. Shlevin submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Harold H. Shlevin been buying or selling stock?
Recorded transactions: 1 open-market purchase ($8K) and 6 open-market sales ($501K) across all tracked filings.
Where can I see all of Harold H. Shlevin's SEC 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.
Learn More
Open the live Harold H. Shlevin profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.