DAVID W NIEMIEC
CIK 1102903 · last filed 2026-03-10
"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.
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Disclosed Exposure
$1.94M
Companies
2
Total Filings
29
Lifetime Open-Market Net
$906.6K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| HESM | Director | 50,527 | $38.49 | $1.94M | $575.0K | 15 | 2026-03-10 |
| OSI PHARMACEUTICALS INC (OSIP) Delisted | Director | 0 | — | — | $331.6K | 6 | 2010-06-09 |
Recent Filings · Page 2 of 3
29 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-12-17 | HESM | Disp (D) | −30,995 | $0 | EDGAR |
| 2019-03-12 | HESM | Mixed | +3,169 | $0 | EDGAR |
| 2018-04-06 | HESM | Exer (M) | +2,826 | $0 | EDGAR |
| 2018-03-12 | HESM | Grant (A) | — | $0 | EDGAR |
| 2017-04-12 | HESM | Mixed | +25,000 | $575.0K | EDGAR |
| 2010-07-23 | — | Exer (M) | +2,000 | $5.1K | |
| 2010-06-09 | OSI PHARMACEUTICALS INC (OSIP) Delisted | U | −2,125 | -$122.2K | EDGAR |
| 2010-06-07 | OSI PHARMACEUTICALS INC (OSIP) Delisted | Mixed | −21,875 | -$1.26M | EDGAR |
| 2010-05-24 | — | Grant (A) | — | $0 | |
| 2009-11-17 | — | Exer (M) | +2,500 | $16.2K |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.