RODERICK A. LARSON
CIK 1550150 · President and CEO · last filed 2026-05-21
"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
$25.55M
Companies
2
Total Filings
40
Lifetime Open-Market Net
-$84.7K
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 |
|---|---|---|---|---|---|---|---|
| NPK International Inc. (NR) Delisted | Director | 257,306 | $7.25 | $1.87M | $0 | 13 | 2026-05-21 |
| OII | President and CEO | 648,710 | $39.39 | $25.55M | -$84.7K | 27 | 2026-05-19 |
Recent Filings · Page 2 of 4
40 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-05-22 | NPK International Inc. (NR) Delisted | Grant (A) | +38,560 | $0 | EDGAR |
| 2023-02-28 | OII | Mixed | +60,983 | -$710.8K | EDGAR |
| 2022-05-20 | NPK International Inc. (NR) Delisted | Grant (A) | +36,496 | $0 | EDGAR |
| 2022-03-01 | OII | Mixed | +71,384 | -$463.8K | EDGAR |
| 2021-05-21 | NPK International Inc. (NR) Delisted | Grant (A) | +34,299 | $0 | EDGAR |
| 2021-03-02 | OII | Mixed | +127,632 | -$289.4K | EDGAR |
| 2020-05-22 | NPK International Inc. (NR) Delisted | Grant (A) | +30,562 | $0 | EDGAR |
| 2020-03-10 | OII | Buy (P) | +10,000 | $50.0K | EDGAR |
| 2020-02-28 | OII | Grant (A) | +107,922 | $0 | EDGAR |
| 2020-02-25 | OII | Tax (F) | −18,984 | -$246.2K | 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.