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.
Trading Pattern
InsiderAlpha's records for Darrell E. Hollek go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
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.
- William George III - $31.67M of FIX open-market activity in the last 12 months
- 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
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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