MCCOLLUM MARK A

Director · WLK, SDRL, OKE

As of 2026-09-16, MCCOLLUM MARK A has 20 Form 4 transactions on record across 3 companies — 12 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $518KIndirect: $0$518Kas of 2026-09-16
  • Direct $518K
  • Indirect $0
OKEdirect2,572 sh$238K
WLKdirect2,184 sh$154K
SDRLdirect2,618 sh$125K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

WLK · 10 trades
2026-08-14: Award / grant, 2,184 sh ($0)2026-08-08: Option exercise, 2,168 sh ($0)2026-08-08: Option exercise, 2,168 sh2026-08-08: Option exercise, 2,168 sh2026-08-08: Option exercise, 2,168 sh2026-08-08: Option exercise, 2,168 sh2025-08-09: Option exercise, 1,128 sh ($0)2025-08-09: Option exercise, 1,128 sh2025-08-09: Option exercise, 1,128 sh2025-08-08: Award / grant, 2,168 sh ($0)
SDRL · 8 trades
2026-06-03: Award / grant, 2,618 sh ($0)2026-05-14: Option exercise, 4,860 sh ($0)2026-05-14: Option exercise, 4,860 sh2026-05-14: Option exercise, 4,860 sh2025-05-14: Award / grant, 4,860 sh ($0)2025-04-17: Option exercise, 2,409 sh ($0)2025-04-17: Option exercise, 2,409 sh2025-04-17: Option exercise, 2,409 sh
OKE · 2 trades
2026-05-20: Award / grant, 1,845 sh ($170K)2026-01-23: Award / grant, 727 sh ($57K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
20 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-14WLKAward / grant2,1842,184Form 4
2026-08-08WLKOption exercise2,1682,168Form 4
2026-08-08WLKOption exercise2,16811,824Form 4
2026-08-08WLKOption exercise2,16811,824Form 4
2026-08-08WLKOption exercise2,16811,824Form 4
2026-08-08WLKOption exercise2,16811,824Form 4
2026-06-03SDRLAward / grant2,6182,618Form 4
2026-05-20OKEAward / grant1,8452,572Form 4
2026-05-14SDRLOption exercise4,8600Form 4
2026-05-14SDRLOption exercise4,8607,269Form 4
2026-05-14SDRLOption exercise4,8607,269Form 4
2026-01-23OKEAward / grant727727Form 4
2025-08-09WLKOption exercise1,1280Form 4
2025-08-09WLKOption exercise1,1289,656Form 4
2025-08-09WLKOption exercise1,1289,656Form 4
2025-08-08WLKAward / grant2,1682,168Form 4
2025-05-14SDRLAward / grant4,8604,860Form 4
2025-04-17SDRLOption exercise2,4090Form 4
2025-04-17SDRLOption exercise2,4092,409Form 4
2025-04-17SDRLOption exercise2,4092,409Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.