Gary A. Shiffman is CEO at SUN COMMUNITIES INC (SUI). They have made 22 open-market trades across 1 company since 2009, most recently 2026-06-24.
CIK 0001171077
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $187.5M since 2021, against 20 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SUI | 857,761 | $101.3M |
| ORGN | 22,500 | $22K |
| Total | $101.3M |
Shares reported on the most recent Form 4, priced at the 2026-06-25 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 100% | 100% | 100% |
| Avg Move | -1.4% | -1.7% | -1.7% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SUI | SELL | 2026-06-24 | 2026-06-25 | $119.96 | $3.0M | -0.2% | +1.5% | -6.0% |
| SUI | SELL | 2025-12-17 | 2025-12-18 | $123.53 | $38.8M | +0.3% | +2.0% | +7.0% |
| SUI | BUY | 2021-08-16 | 2021-11-02 | $195.52 | $96.3M | -2.7% | -1.6% | -4.7% |
| SUI | BUY | 2021-07-28 | 2021-08-05 | $194.20 | $91.2M | -0.6% | +4.3% | -0.8% |
| SUI | SELL | 2021-05-24 | 2021-05-26 | $167.90 | $24.4M | +3.9% | +4.6% | +17.6% |
| SUI | SELL | 2019-12-03 | 2019-12-05 | $162.13 | $37.3M | -7.1% | -7.1% | +6.0% |
| SUI | SELL | 2019-03-12 | 2019-03-14 | $117.84 | $3.0M | +0.8% | +1.7% | +9.3% |
| SUI | SELL | 2016-06-30 | 2016-07-01 | $75.81 | $2.6M | -1.9% | +4.6% | +3.9% |
| SUI | SELL | 2016-06-30 | 2016-07-01 | $76.10 | $1.8M | -1.9% | +4.6% | +3.9% |
| SUI | SELL | 2016-06-30 | 2016-07-01 | $76.56 | $1.4M | -1.9% | +4.6% | +3.9% |
| SUI | SELL | 2016-06-30 | 2016-07-01 | $75.93 | $3.7M | -1.9% | +4.6% | +3.9% |
| SUI | SELL | 2016-06-29 | 2016-07-01 | $75.71 | $1.7M | -1.9% | +4.6% | +3.9% |
| SUI | SELL | 2016-06-29 | 2016-07-01 | $75.73 | $1.4M | -1.9% | +4.6% | +3.9% |
| SUI | SELL | 2016-06-29 | 2016-07-01 | $75.67 | $1.4M | -1.9% | +4.6% | +3.9% |
| SUI | SELL | 2010-01-06 | 2010-01-07 | $20.38 | $73K | -1.4% | -1.7% | -1.7% |
| SUI | SELL | 2010-01-06 | 2010-01-15 | $20.50 | $8K | -1.4% | -1.7% | -1.7% |
| SUI | SELL | 2010-01-05 | 2010-01-06 | $19.99 | $20K | -1.4% | -1.7% | -1.7% |
| SUI | SELL | 2010-01-04 | 2010-01-05 | $19.99 | $244K | -1.4% | -1.7% | -1.7% |
| SUI | SELL | 2009-12-30 | 2010-01-04 | $20.04 | $417K | -1.4% | -1.7% | -1.7% |
| SUI | SELL | 2009-12-30 | 2010-01-04 | $20.02 | $384K | -1.4% | -1.7% | -1.7% |
| SUI | SELL | 2009-12-29 | 2009-12-30 | $20.06 | $401K | -1.4% | -1.7% | -1.7% |
| SUI | SELL | 2009-12-28 | 2009-12-29 | $20.02 | $234K | -1.4% | -1.7% | -1.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.