GERALD M CHIZEVER
CIK 1134261 · last filed 2026-07-29
GERALD M CHIZEVER is a corporate insider who has filed 26 SEC Form 4 insider transactions across 1 company since 2016. The most recent filing shows the insider had shares withheld for taxes covering $36.1K of OSIS on Jul 29, 2026. Across all open-market trades the lifetime net is −$2.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.5M 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.
$2.48M
1
26
-$2.00M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| OSIS | Director | 10,676 | $232.61 | $2.48M | -$2.00M | 20 | 2026-07-29 |
Recent Filings
26 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-07-29 | OSIS | Tax (F) | −166 | -$36.1K | EDGAR |
| 2026-07-21 | OSIS | Grant (A) | +924 | $200.2K | EDGAR |
| 2026-07-07 | OSIS | Tax (F) | −231 | -$51.2K | EDGAR |
| 2025-08-22 | OSIS | Grant (A) | +873 | $195.0K | EDGAR |
| 2025-01-27 | OSIS | Notice (144) | −2,701 | -$528.9K | EDGAR |
| 2025-01-27 | OSIS | Sell (S) | −2,701 | -$528.9K | EDGAR |
| 2024-11-12 | OSIS | Sell (S) | −2,000 | -$296.3K | EDGAR |
| 2024-11-07 | OSIS | Notice (144) | −2,000 | -$296.3K | EDGAR |
| 2024-09-13 | OSIS | Sell (S) | −3,000 | -$415.2K | EDGAR |
| 2024-09-11 | OSIS | Notice (144) | −3,000 | -$415.2K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.