Oil States International, Inc. (OIS) has 20 known insider and institutional holders on record. The largest holder is GEODynamics B.V. with 8,661,083 shares. Other notable holders include JANA PARTNERS LLC and HCperf Holdings B.V..
Over the last 12 months, insiders have made 27 transactions in OIS stock — 14 buys (valued at $50K) and 2 sells (valued at $593.18K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
OIS Insider Ownership
Top Holder
GEODynamics B.V.
8,661,083 shares
Buys (12 mo)
14
$50K value
Sells (12 mo)
2
$593.18K value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Geodynamics B.v. |
10 Percent Owner |
8,661,083 |
2018-01-23 |
|
| 2 |
Jana Partners Llc |
10 Percent Owner |
5,017,228 |
2014-06-06 |
|
| 3 |
Hcperf Holdings B.v. |
Director |
2,736,033 |
2018-02-26 |
|
| 4 |
Taylor Cindy B |
President & CEO |
2,247,449 |
2026-02-23 |
|
| 5 |
Moses Philip Scott |
EVP, Chief Operating Officer |
739,253 |
2026-02-23 |
|
| 6 |
Hajdik Lloyd A |
Executive VP, CFO & Treasurer |
687,035 |
2026-02-23 |
|
| 7 |
Taylor Brian E. |
Sr. VP, Controller & CAO |
222,379 |
2026-02-23 |
|
| 8 |
Potter Robert L |
Director |
208,318 |
2026-04-01 |
|
| 9 |
Steen Lias Jeff |
Other: Former EVP, HR & Legal |
199,285 |
2021-07-07 |
|
| 10 |
Cragg Christopher E |
Other: Former EVP, Operations |
185,799 |
2021-03-05 |
|
| 11 |
Dickerson Lawrence R |
Director |
158,853 |
2025-05-14 |
|
| 12 |
Wright E Joseph |
Director |
146,544 |
2025-05-14 |
|
| 13 |
Vanderhider Hallie A. |
Director |
144,106 |
2025-05-14 |
|
| 14 |
Seaver Christopher T |
Director |
137,328 |
2022-05-11 |
|
| 15 |
Castillo-rhodes Denise |
Director |
123,950 |
2025-05-14 |
|
| 16 |
Hollek Darrell E |
Director |
104,073 |
2026-04-01 |
|
| 17 |
Nelson S James |
Director |
60,356 |
2020-05-12 |
|
| 18 |
Wells Stephen A |
Director |
55,149 |
2018-05-09 |
|
| 19 |
Van Kleef William T |
Director |
49,537 |
2020-05-12 |
|
| 20 |
Swanson Douglas E |
Director |
49,094 |
2014-11-06 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-31 |
Hollek Darrell E |
Director |
Informative Sell |
42,511 |
$11.61 |
$493.55K |
| 2026-03-31 |
Potter Robert L |
Director |
RSU Award |
1,074 |
$11.64 |
$12.5K |
| 2026-02-20 |
Moses Philip Scott |
EVP, Chief Operating Officer |
Tax Withholding of RSU |
15,266 |
$12.53 |
$191.28K |
| 2026-02-19 |
Moses Philip Scott |
EVP, Chief Operating Officer |
RSU Award |
62,500 |
- |
- |
| 2026-02-20 |
Taylor Brian E. |
Sr. VP, Controller & CAO |
Tax Withholding of RSU |
9,858 |
$12.53 |
$123.52K |
| 2026-02-19 |
Taylor Brian E. |
Sr. VP, Controller & CAO |
RSU Award |
37,500 |
- |
- |
| 2026-02-20 |
Hajdik Lloyd A |
Executive VP, CFO & Treasurer |
Tax Withholding of RSU |
16,430 |
$12.53 |
$205.87K |
| 2026-02-19 |
Hajdik Lloyd A |
Executive VP, CFO & Treasurer |
RSU Award |
62,500 |
- |
- |
| 2026-02-20 |
Taylor Cindy B |
President & CEO |
Tax Withholding of RSU |
42,061 |
$12.53 |
$527.02K |
| 2026-02-19 |
Taylor Cindy B |
President & CEO |
RSU Award |
160,000 |
- |
- |
| 2026-02-18 |
Moses Philip Scott |
EVP, Chief Operating Officer |
Tax Withholding of RSU |
11,203 |
$9.43 |
$105.64K |
| 2026-02-18 |
Hajdik Lloyd A |
Executive VP, CFO & Treasurer |
Tax Withholding of RSU |
12,057 |
$9.43 |
$113.7K |
| 2026-02-18 |
Taylor Cindy B |
President & CEO |
Tax Withholding of RSU |
34,726 |
$9.43 |
$327.47K |
| 2026-02-16 |
Moses Philip Scott |
EVP, Chief Operating Officer |
Tax Withholding of RSU |
13,439 |
$9.40 |
$126.33K |
| 2026-02-16 |
Taylor Brian E. |
Sr. VP, Controller & CAO |
Tax Withholding of RSU |
7,161 |
$9.40 |
$67.31K |
| 2026-02-16 |
Hajdik Lloyd A |
Executive VP, CFO & Treasurer |
Tax Withholding of RSU |
14,463 |
$9.40 |
$135.95K |
| 2026-02-16 |
Taylor Cindy B |
President & CEO |
Tax Withholding of RSU |
41,655 |
$9.40 |
$391.56K |
| 2025-12-31 |
Potter Robert L |
Director |
RSU Award |
1,846 |
$6.77 |
$12.5K |
| 2025-12-16 |
Taylor Cindy B |
President & CEO |
Informative Sell |
14,760 |
$6.75 |
$99.63K |
| 2025-09-30 |
Potter Robert L |
Director |
RSU Award |
2,063 |
$6.06 |
$12.5K |
| 2025-06-30 |
Potter Robert L |
Director |
RSU Award |
2,332 |
$5.36 |
$12.5K |
| 2025-05-13 |
Castillo-rhodes Denise |
Director |
RSU Award |
31,185 |
- |
- |
| 2025-05-13 |
Hollek Darrell E |
Director |
RSU Award |
31,185 |
- |
- |
| 2025-05-13 |
Vanderhider Hallie A. |
Director |
RSU Award |
31,185 |
- |
- |
| 2025-05-13 |
Wright E Joseph |
Director |
RSU Award |
31,185 |
- |
- |
