ATEX · Insider Trading
Anterix Inc. Common Stock
Every open-market purchase and sale reported by ATEX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-13 | Elena Marquez | Chief Financial Officer | MIXED | −3,754 | −$351.53K |
| 2026-10-06 | Elena Marquez | Chief Financial Officer | F | −473 | −$39.89K |
| 2026-09-29 | Elena Marquez | Chief Financial Officer | F | −1,325 | −$108.32K |
| 2026-09-23 | Scott A. Lang | President and CEO | Sell | −15,000 | −$1.20M |
| 2026-09-22 | Scott A. Lang | President and CEO | Sell | −15,000 | −$1.20M |
| 2026-09-11 | Heather Martin | Chief Marketing Officer | MIXED | −11,529 | −$975.05K |
| 2026-09-11 | Gena L Ashe | Chief Legal Officer & Corp Sec | MIXED | −293 | −$372.26K |
| 2026-09-11 | Leslie B Daniels | Director | Sell | −2,500 | −$209.57K |
| 2026-09-08 | Gena L Ashe | Chief Legal Officer & Corp Sec | Sell | −4,357 | −$372.26K |
| 2026-09-08 | Leslie B Daniels | Director | Sell | −10,100 | −$879.90K |
| 2026-08-27 | Christopher Guttman-McCabe | Chief Reg & Comm Officer | MIXED | — | −$2.27M |
| 2026-08-26 | Thomas R. Kuhn | Director | MIXED | +1,137 | −$683.85K |
| 2026-08-20 | William Heard | Director | G | −5,400 | — |
| 2026-08-18 | William Heard | Director | Sell | −46,400 | −$4.18M |
| 2026-08-17 | Scott A. Lang | President and CEO | Sell | −35,057 | −$3.16M |
| 2026-08-14 | Christopher Guttman-McCabe | Chief Reg & Comm Officer | Sell | −122,852 | −$10.04M |
| 2026-08-07 | William Heard | Director | G | −1,887 | — |
| 2026-08-07 | William Heard | Director | G | −1,887 | — |
| 2026-08-06 | Mark Fleischhauer | Director | A | +1,598 | — |
| 2026-08-06 | Mahvash Yazdi | Director | A | +1,598 | — |
| 2026-08-06 | Leslie B Daniels | Director | A | +1,598 | — |
| 2026-08-06 | William Heard | Director | A | +1,598 | — |
| 2026-08-06 | Owl Creek Asset Management, L.P. | 10%+ Owner | A | +3,196 | — |
| 2026-08-06 | Owl Creek Asset Management, L.P. | 10%+ Owner | A | +3,196 | — |
| 2026-08-06 | Mahvash Yazdi | Director | A | +1,598 | — |
| 2026-08-06 | Mark Fleischhauer | Director | A | +1,598 | — |
| 2026-08-06 | Leslie B Daniels | Director | A | +1,598 | — |
| 2026-08-06 | William Heard | Director | A | +1,598 | — |
| 2026-07-14 | Christopher Guttman-McCabe | Chief Reg & Comm Officer | F | −1,516 | −$153.06K |
| 2026-07-14 | Elena Marquez | Chief Financial Officer | F | −231 | −$23.32K |
| 2026-07-10 | Christopher Guttman-McCabe | Chief Reg & Comm Officer | — | — | — |
| 2026-06-22 | Scott A. Lang | President and CEO | Sell | −170 | −$13.64K |
| 2026-06-18 | Elena Marquez | Chief Financial Officer | MIXED | −3,065 | −$292.09K |
| 2026-06-17 | Mark Fleischhauer | Director | Sell | −3,500 | −$279.40K |
| 2026-06-17 | Scott A. Lang | President and CEO | MIXED | +50,227 | −$2.69M |
| 2026-06-17 | Christopher Guttman-McCabe | Chief Reg & Comm Officer | MIXED | +31,415 | −$2.94M |
| 2026-06-17 | Mahvash Yazdi | Director | Sell | −7,000 | −$560.00K |
| 2026-06-17 | Gena L Ashe | Chief Legal Officer & Corp Sec | MIXED | −4,000 | −$1.44M |
| 2026-05-26 | Gena L Ashe | Chief Legal Officer & Corp Sec | F | −2,501 | −$150.06K |
| 2026-05-22 | Elena Marquez | Chief Financial Officer | A | +3,694 | — |
| 2026-05-22 | Christopher Guttman-McCabe | Chief Reg & Comm Officer | A | +4,926 | — |
| 2026-05-22 | Scott A. Lang | President and CEO | A | +18,210 | — |
| 2026-05-22 | Heather Martin | Chief Marketing Officer | A | +3,694 | — |
| 2026-05-22 | Gena L Ashe | Chief Legal Officer & Corp Sec | A | +3,694 | — |
| 2026-05-20 | Gena L Ashe | Chief Legal Officer & Corp Sec | F | −1,028 | −$58.66K |
| 2026-05-20 | Christopher Guttman-McCabe | Chief Reg & Comm Officer | F | −1,426 | −$81.37K |
| 2026-05-19 | Elena Marquez | Chief Financial Officer | F | −271 | −$15.34K |
| 2026-03-04 | Gena L Ashe | Chief Legal Officer & Corp Sec | MIXED | — | −$103.77K |
| 2025-12-19 | Scott A. Lang | President and CEO | Buy | +1,160 | +$25.07K |
| 2025-12-10 | Scott A. Lang | President and CEO | Buy | +2,450 | +$50.00K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Jeffrey A Altman | Director | 5,536,268 | $383.83M |
| Owl Creek Asset Management, L.P. | 10%+ Owner | 5,536,268 | $383.83M |
| William Heard | Director | 1,674,303 | $116.08M |
| Timothy Gray | Chief Financial Officer | 77,022 | $5.34M |
| Christopher Guttman-McCabe | Chief Reg & Comm Officer | 55,152 | $3.82M |
| Leslie B Daniels | Director | 48,477 | $3.36M |
| Ryan Gerbrandt | Chief Operating Officer | 42,362 | $2.94M |
| Heather Martin | Chief Marketing Officer | 26,743 | $1.85M |
| Scott A. Lang | President and CEO | 26,470 | $1.84M |
| Morgan E Obrien | Executive Chairman | 23,973 | $1.66M |
| Thomas R. Kuhn | Director | 23,339 | $1.62M |
| Mahvash Yazdi | Director | 21,755 | $1.51M |
| Mark Fleischhauer | Director | 14,367 | $996.06K |
| Gena L Ashe | Chief Legal Officer & Corp Sec | 13,302 | $922.23K |
| Elena Marquez | Chief Financial Officer | 12,704 | $880.77K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the ATEX quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.