Gary A. Shiffman - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Gary A. Shiffman has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $3.00M.
Profile
Gary A. Shiffman holds the role of Director at SUN COMMUNITIES INC (SUI). Shiffman has reported 2 insider filings with the SEC since 2026. The most recent filing was in June 2026.
| Role | Director |
|---|---|
| Notability | 26/100 |
Board memberships
- SUN COMMUNITIES INC
Reported roles
- Director
Trading Pattern
InsiderAlpha's records for Gary A. Shiffman go back to 2026: 2 primary Form 4 filings, an average of 2.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Gary A. Shiffman 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.
- Director at SUN COMMUNITIES INC (SUI) - 2 filings, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-25 | SUI | SUN COMMUNITIES INC | S - Open-market sale | 25.0K | $119.96 | $3.00M |
| 2026-02-09 | SUI | SUN COMMUNITIES INC | A - Grant or award | 1.6K | $123.68 | $200K |
Companies - Last 90 Days
- SUN COMMUNITIES INC (SUI) - 1 filing, last 2026-06-25
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Gary A. Shiffman 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.
- Fernando Castro-Caratini - $2.96M of SUI open-market activity in the last 12 months
- Clunet R. Lewis - $2.41M of SUI open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- General Atlantic (LFT), L.P.
- GENERAL ATLANTIC GENPAR (BERMUDA), L.P.
- GENERAL ATLANTIC GENPAR, L.P.
- GENERAL ATLANTIC, L.P.
- A/S Genmab
- Asher Genoot
- Gregory George
- Simeon George
Frequently Asked Questions
Who is Gary A. Shiffman?
Gary A. Shiffman holds the role of Director at SUN COMMUNITIES INC (SUI). Shiffman has reported 2 insider filings with the SEC since 2026. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Gary A. Shiffman submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Gary A. Shiffman been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($3.00M) across all tracked filings.
Where can I see all of Gary A. Shiffman'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 Gary A. Shiffman profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.