William C. Irwin
CIK 1764154 · last filed 2026-05-28
William C. Irwin is a corporate insider who has filed 6 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for RBKB, was dated May 28, 2026. Across all open-market trades the lifetime net is +$43.5K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $489.4K across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$489.4K
1
6
$43.5K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RBKB | Director | 29,287 | $16.71 | $489.4K | $43.5K | 6 | 2026-05-28 |
Recent Filings
6 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-28 | RBKB | Grant (A) | +1,624 | $0 | EDGAR |
| 2021-08-26 | RBKB | Exer (M) | +5,455 | $35.8K | EDGAR |
| 2020-11-06 | RBKB | Grant (A) | +8,728 | $0 | EDGAR |
| 2020-08-27 | RBKB | Grant (A) | +8,728 | $0 | EDGAR |
| 2020-08-05 | RBKB | Buy (P) | +3,000 | $20.6K | EDGAR |
| 2020-05-08 | RBKB | Buy (P) | +3,000 | $22.9K | EDGAR |