Summary
Updated Aug 31, 2026
Darrell E. Hollek is Director of OIL STATES INTERNATIONAL, INC (OIS). 3 SEC Form 4 filings on record going back to 2025, most recently on 13 May 2026. Most recent open-market trade: sold $494K of OIS on 1 April 2026. Lifetime open-market sales: $494K.
Recent Transactions
3Every recent SEC Form 4 transaction Darrell E. Hollek has reported, most recent first.
Other Insiders Active in the Same Sector
No other insider has filed at Darrell E. Hollek's companies, so these are insiders reporting open-market trades at other companies in the same sector.
- Phebe N. Novakovic - $31.38M of GD open-market activity in the last 12 months
- Mark Frichtl - $31.14M of OUST open-market activity in the last 12 months
- Michael W. Bayley - $30.19M of RCL open-market activity in the last 12 months
- Jason T. Liberty - $29.71M of RCL open-market activity in the last 12 months
- Mark Lagrand Burns - $28.64M of GD open-market activity in the last 12 months
- John Engel - $28.50M of WCC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Darrell E. Hollek?
Darrell E. Hollek is a corporate insider, tracked as Director of OIL STATES INTERNATIONAL, INC (OIS). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Darrell E. Hollek last file a Form 4?
The most recent primary Form 4 on record is dated 13 May 2026, one of 3 filings going back to 2025.
Has Darrell E. Hollek been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($494K) across all tracked filings.
Where can I see all of Darrell E. Hollek's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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