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CORBIN BARNES

CIK 1861656 · SVP, Corporate Dev and IR · last filed 2026-03-03

CORBIN BARNES is a SVP, Corporate Dev and IR who has filed 15 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing shows the insider had shares withheld for taxes covering $13.0K of IOSP on Mar 3, 2026. Across all open-market trades the lifetime net is −$203.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.2M 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.

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Disclosed Exposure

$1.23M

Companies

1

Total Filings

15

Lifetime Open-Market Net

-$203.4K

Filer Profile

Reported Address
8310 SOUTH VALLEY HIGHWAY
SUITE 350
ENGLEWOOD, CO 80112
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
IOSP SVP, Corporate Dev and IR 13,079 $93.95 $1.23M -$203.4K 15 2026-03-03

Recent Filings

15 filings
Insider 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
2026-03-03 IOSP Tax (F) −166 -$13.0K EDGAR
2026-02-25 IOSP Grant (A) +2,481 $0 EDGAR
2026-02-18 IOSP Grant (A) +1,730 $0 EDGAR
2025-05-15 IOSP Tax (F) −740 -$67.7K EDGAR
2025-02-27 IOSP Mixed +1,687 -$462 EDGAR
2025-02-26 IOSP Mixed — -$2.0K EDGAR
2025-02-24 IOSP Mixed — -$278.1K EDGAR
2025-01-30 IOSP Sell (S) −307 -$36.1K EDGAR
2024-05-16 IOSP Tax (F) −1,110 -$143.0K EDGAR
2024-02-28 IOSP Grant (A) +1,306 $0 EDGAR
Showing 1–10 of 15
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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.