SEC CIK 1215888

MCCOLLUM MARK A

Reported ownership across 6 companies, sourced from SEC Form 4 filings and updated daily.

Current Positions

CompanyShares OwnedAs Of
HALview stock →216,9932017-02-27
AROCview stock →82,7512018-04-26
WLKview stock →11,8242026-08-08
SDRLview stock →7,2692026-05-14
OKEview stock →2,5722026-05-20
KBRview stock →02006-11-15

Position History — WLK

Reported shares owned immediately after each Form 4 transaction, over time.

03,9417,88311,8242019-052019-082020-082021-082022-032022-082023-082024-082025-082026-08

Recent Filings — WLK

DateActivitySharesPriceOwned After
2026-08-14Grant / award (derivative)2,184$0.002,184
2026-08-08Option exercise (derivative)2,168$0.002,168
2026-08-08Option exercise2,168—11,824
2025-08-09Option exercise (derivative)1,128$0.000
2025-08-09Option exercise1,128—9,656
2025-08-08Grant / award (derivative)2,168$0.002,168
2024-08-11Option exercise (derivative)1,136$0.000
2024-08-11Option exercise1,136—8,528
2024-08-09Grant / award (derivative)1,128$0.001,128
2023-08-12Option exercise (derivative)1,446$0.000
2023-08-12Option exercise1,446—7,392
2023-08-11Grant / award (derivative)1,136$0.001,136
2022-08-13Option exercise (derivative)1,763$0.000
2022-08-13Option exercise1,763—5,946
2022-08-12Grant / award (derivative)1,446$0.001,446
2022-03-03Gift3,000$0.004,183
2021-08-14Option exercise (derivative)2,400$0.000
2021-08-14Option exercise2,400—7,183
2021-08-13Grant / award (derivative)1,763$0.001,763
2020-08-16Option exercise (derivative)2,387$0.000
2020-08-16Option exercise2,387—4,783
2020-08-14Grant / award (derivative)2,400$0.002,400
2019-08-17Option exercise (derivative)1,409$0.000
2019-08-17Option exercise1,409—2,396
2019-08-16Grant / award (derivative)2,387$0.002,387
2019-05-18Option exercise (derivative)987$0.000
2019-05-18Option exercise987—987
2018-08-17Grant / award (derivative)1,409$0.001,409
2018-05-18Grant / award (derivative)987$0.00987

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.