KIRK K CALHOUN
CIK 1203721 · last filed 2026-04-13
"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
$139.2K
Companies
7
Total Filings
45
Lifetime Open-Market Net
$20.5K
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 |
|---|---|---|---|---|---|---|---|
| RYZ | Director | 4,576 | $30.41 | $139.2K | $0 | 1 | 2026-04-13 |
| Ryerson Holding Corp (RYI) Delisted | Director | 4,187 | $28.16 | $117.9K | $5.5K | 11 | 2026-01-06 |
| NantHealth, Inc. (NH) Delisted | Director | 148,780 | $1.35 | $200.9K | $0 | 6 | 2022-06-10 |
| PLx Pharma Inc. (PLXP) Delisted | Director | 1,675 | $0.09 | $146 | $0 | 5 | 2022-02-24 |
| RESPONSE GENETICS INC (RGDX) Delisted | Director | 14,312 | — | — | $15.0K | 10 | 2014-07-11 |
| Cardiovascular Systems Inc (RDYN) Delisted | Director | — | — | — | $0 | 2 | 2008-05-09 |
| Adams Respiratory Therapeutics, Inc. (ARXT) Delisted | Director | 0 | — | — | $0 | 7 | 2008-01-30 |
Recent Filings · Page 2 of 5
45 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-10-03 | Ryerson Holding Corp (RYI) Delisted | Grant (A) | +300 | $0 | EDGAR |
| 2022-06-10 | NantHealth, Inc. (NH) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-02-24 | PLx Pharma Inc. (PLXP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-07-26 | NantHealth, Inc. (NH) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-11-20 | PLx Pharma Inc. (PLXP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-05-26 | NantHealth, Inc. (NH) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-03-24 | PLx Pharma Inc. (PLXP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-06-17 | NantHealth, Inc. (NH) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-03-18 | PLx Pharma Inc. (PLXP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2018-09-07 | NantHealth, Inc. (NH) Delisted | Grant (A) | +97,912 | $0 | EDGAR |
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.