KIRK K CALHOUN
CIK 1203721 · last filed 2026-07-27
"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
$126.0K
Companies
7
Total Filings
46
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 | 4,673 | $26.97 | $126.0K | $0 | 2 | 2026-07-27 |
| Ryerson Holding Corp (RYI) Delisted | Director | 4,187 | $28.16 | $117.9K | $5.5K | 11 | 2026-01-06 |
| NantHealth, Inc. (NH) Delisted | Director | 9,919 | $1.35 | $13.4K | $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 4 of 5
46 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2010-12-03 | RESPONSE GENETICS INC (RGDX) Delisted | Grant (A) | — | $0 | EDGAR |
| 2010-10-19 | — | Disp (D) | — | $0 | |
| 2010-08-05 | RESPONSE GENETICS INC (RGDX) Delisted | Exer (M) | +4,312 | $5.8K | EDGAR |
| 2010-05-27 | RESPONSE GENETICS INC (RGDX) Delisted | Grant (A) | — | $0 | EDGAR |
| 2009-12-14 | — | Grant (A) | — | $0 | |
| 2008-05-20 | RESPONSE GENETICS INC (RGDX) Delisted | Grant (A) | — | $0 | EDGAR |
| 2008-05-09 | Cardiovascular Systems Inc (RDYN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2008-01-30 | Adams Respiratory Therapeutics, Inc. (ARXT) Delisted | Disp (D) | −3,184 | -$191.0K | EDGAR |
| 2008-01-03 | Adams Respiratory Therapeutics, Inc. (ARXT) Delisted | Grant (A) | +210 | $0 | EDGAR |
| 2007-12-18 | Adams Respiratory Therapeutics, Inc. (ARXT) Delisted | Grant (A) | — | $0 | EDGAR |
Form 4 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.
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.
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.