Anterix Inc. (ATEX) has 20 known insider and institutional holders on record. The largest holder is Owl Creek Asset Management, L.P. with 5,406,033 shares. Other notable holders include FEINBERG STEPHEN and FIE II LLC.
Over the last 12 months, insiders have made 39 transactions in ATEX stock — 16 buys (valued at $15.47M) and 7 sells (valued at $1.53M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
ATEX Insider Ownership
Top Holder
Owl Creek Asset Management, L.P.
5,406,033 shares
Buys (12 mo)
16
$15.47M value
Sells (12 mo)
7
$1.53M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Owl Creek Asset Management, L.p. |
10 Percent Owner |
5,406,033 |
2021-02-25 |
|
| 2 |
Feinberg Stephen |
10 Percent Owner |
1,701,599 |
2019-10-15 |
|
| 3 |
Fie Ii Llc |
10 Percent Owner |
1,449,900 |
2018-08-22 |
|
| 4 |
Mcauley Brian |
Chairman Emeritus |
332,086 |
2020-09-02 |
|
| 5 |
Schwartz Robert Harris |
President and CEO |
115,867 |
2024-08-26 |
|
| 6 |
Pescatore John |
Vice Chairman |
80,106 |
2018-06-11 |
|
| 7 |
Gray Timothy |
Chief Financial Officer |
77,022 |
2025-08-21 |
|
| 8 |
Daniels Leslie B |
Director |
54,479 |
2025-08-07 |
|
| 9 |
Sites John C Jr |
Director |
43,506 |
2017-08-04 |
|
| 10 |
Creede Frank |
Chief Technical Officer |
43,221 |
2017-06-09 |
|
| 11 |
Guttman-mccabe Christopher |
Chief Reg & Comm Officer |
42,892 |
2025-07-15 |
|
| 12 |
Gerbrandt Ryan |
Chief Operating Officer |
42,362 |
2025-07-15 |
|
| 13 |
Gangeri Elaine |
Chief Acc Officer, Treasurer |
36,646 |
2021-05-24 |
|
| 14 |
Martin Heather |
Officer, Other: Chief Marketing Officer |
34,578 |
2025-11-04 |
|
| 15 |
Daskalakis Andrew |
Director |
27,309 |
2016-08-12 |
|
| 16 |
Yazdi Mahvash |
Director |
26,407 |
2025-08-07 |
|
| 17 |
Sidman Thomas J. |
Chief Legal Officer |
24,880 |
2018-09-11 |
|
| 18 |
Saleh Paul N |
Director |
24,175 |
2023-08-30 |
|
| 19 |
Obrien Morgan E |
Executive Chairman |
23,973 |
2024-12-17 |
|
| 20 |
Mcallister Singleton B |
Director |
21,599 |
2023-08-30 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-03 |
Ashe Gena L |
Chief Legal Officer & Corp Sec |
Tax Withholding of RSU |
12,427 |
$36.18 |
$449.61K |
| 2025-12-18 |
Lang Scott A. |
President and CEO |
Informative Buy |
1,160 |
$21.61 |
$25.07K |
| 2025-12-08 |
Lang Scott A. |
President and CEO |
Informative Buy |
2,450 |
$20.41 |
$50K |
| 2025-11-18 |
Ashe Gena L |
Chief Legal Officer & Corp Sec |
Informative Sell |
6,564 |
$21.07 |
$138.3K |
| 2025-09-17 |
Martin Heather |
Officer, Other: Chief Marketing Officer |
Unknown |
- |
- |
- |
| 2025-10-04 |
Marquez Elena |
Chief Financial Officer |
Tax Withholding of RSU |
404 |
$22.55 |
$9.11K |
| 2025-09-29 |
Marquez Elena |
Chief Financial Officer |
RSU Award |
11,405 |
- |
- |
| 2025-09-22 |
Marquez Elena |
Chief Financial Officer |
Unknown |
3,680 |
$40.00 |
$147.2K |
| 2025-09-18 |
Lang Scott A. |
President and CEO |
Informative Buy |
4,650 |
$21.28 |
$98.95K |
| 2025-08-19 |
Gray Timothy |
Chief Financial Officer |
Informative Buy |
50 |
$22.07 |
$1.1K |
| 2025-08-05 |
Fleischhauer Mark |
Director |
RSU Award |
7,767 |
- |
- |
| 2025-08-05 |
Heard William |
Director |
RSU Award |
7,767 |
- |
- |
| 2025-08-05 |
Altman Jeffrey A |
10 Percent Owner |
RSU Award |
7,767 |
- |
- |
| 2025-08-05 |
Yazdi Mahvash |
Director |
RSU Award |
7,767 |
- |
- |
| 2025-08-05 |
Daniels Leslie B |
Director |
RSU Award |
7,767 |
- |
- |
| 2025-07-12 |
Guttman-mccabe Christopher |
Chief Reg & Comm Officer |
Tax Withholding of RSU |
1,517 |
$23.95 |
$36.33K |
| 2025-07-12 |
Gerbrandt Ryan |
Chief Operating Officer |
Tax Withholding of RSU |
1,470 |
$23.95 |
$35.21K |
| 2025-06-12 |
Kuhn Thomas R. |
Other: Executive Chairman |
RSU Award |
6,222 |
- |
- |
| 2025-05-22 |
Ashe Gena L |
Chief Legal Officer & Corp Sec |
Tax Withholding of RSU |
2,732 |
$28.35 |
$77.45K |
| 2025-05-22 |
Gray Timothy |
Chief Financial Officer |
Tax Withholding of RSU |
4,098 |
$28.35 |
$116.18K |
| 2025-05-21 |
Lang Scott A. |
President and CEO |
RSU Award |
223,546 |
$34.96 |
$7.82M |
| 2025-05-20 |
Guttman-mccabe Christopher |
Chief Reg & Comm Officer |
RSU Award |
53,491 |
$34.96 |
$1.87M |
| 2025-05-20 |
Gerbrandt Ryan |
Chief Operating Officer |
RSU Award |
53,491 |
$34.96 |
$1.87M |
| 2025-05-20 |
Ashe Gena L |
Chief Legal Officer & Corp Sec |
RSU Award |
53,491 |
$34.96 |
$1.87M |
| 2025-05-20 |
Gray Timothy |
Chief Financial Officer |
RSU Award |
53,491 |
$34.96 |
$1.87M |
