ATEXNasdaqTelephone Communications (No Radiotelephone)Fiscal year ends March 31
Anterix Inc.
Financials through Q1 FY2027, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 11, 2026
$77.87−2.61 (-3.24%)
Close on Oct 19, 2026
- Market cap
- $1.53B
- P/E (TTM)
- 22.2
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
97.4%
19M of 20M shares
Institutional holders
172
59 new, 16 sold out
Net institutional buying
2M
In Q2 2026
Insider trades, 12 months
2 buys · 43 sales
Net sold $35.72M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 999,278 | 5.10% | 13G (passive) | Jun 30, 2026 |
| Jeffrey A. Altman | 5,551,684 | 28.50% | 13D (active) amendment | Jun 25, 2026 |
| T. Rowe Price Investment Management, Inc. | 2,348,019 | 12.00% | 13G (passive) | Jun 30, 2026 |
| William E. Heard Declaration of Trust | 1,741,989 | 9.40% | 13D (active) amendment | Feb 28, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of ATEX | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Owl Creek Asset Management, L.P. | 5,411,776 | 27.60% | $557.09M | – | 46.08% |
| T. Rowe Price Investment Management, Inc. | 2,348,019 | 11.97% | $241.71K | New | 0.16% |
| Heard Capital LLC | 1,716,738 | 8.75% | $176.72M | – | 7.56% |
| BlackRock, Inc. | 1,075,115 | 5.48% | $110.67M | +67,972 | 0.00% |
| Price T Rowe Associates Inc /Md/ | 750,451 | 3.83% | $77.25K | +742,496 | 0.01% |
| Jupiter Topco LLC | 662,415 | 3.38% | $68.19M | New | 0.03% |
| Vanguard Capital Management LLC | 553,002 | 2.82% | $56.93M | −20,845 | 0.00% |
| Plustick Management LLC | 520,000 | 2.65% | $53.53M | +20,404 | 19.90% |
| State Street Corp | 495,950 | 2.53% | $51.05M | +108,032 | 0.00% |
| Gamco Investors, Inc. Et Al | 415,520 | 2.12% | $42.77M | −10,300 | 0.38% |
| Geode Capital Management, LLC | 388,076 | 1.98% | $39.96M | +13,775 | 0.00% |
| QVT Financial LP | 383,941 | 1.96% | $39.52M | −120,000 | 2.38% |
| Dimensional Fund Advisors LP | 370,964 | 1.89% | $38.18M | −53,892 | 0.01% |
| FMR LLC | 370,400 | 1.89% | $38.13M | +235,105 | 0.00% |
| Gabelli Funds LLC | 278,500 | 1.42% | $28.67M | +12,700 | 0.18% |
| Invesco Ltd. | 200,975 | 1.02% | $20.69M | New | 0.00% |
| Vanguard Portfolio Management LLC | 158,469 | 0.81% | $16.31M | −6,073 | 0.00% |
| Garnet Equity Capital Holdings, Inc. | 156,119 | 0.80% | $16.07M | −187,377 | 3.03% |
| Potomac Capital Management, Inc. | 155,071 | 0.79% | $15.96M | −18,731 | 10.89% |
| Panoramic Capital, LLC | 154,377 | 0.79% | $15.89M | +19,377 | 6.84% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 172 | 19M | 97.4% | 59 / 44 | 48 / 16 | 5M | 3M |
| Q1 2026 | 132 | 17M | 86.3% | 38 / 46 | 26 / 20 | 4M | 2M |
| Q4 2025 | 117 | 16M | 82.5% | 25 / 36 | 43 / 19 | 2M | 4M |
| Q3 2025 | 111 | 18M | 90.2% | 26 / 31 | 41 / 25 | 3M | 2M |
| Q2 2025 | 111 | 17M | 85.8% | 17 / 48 | 32 / 33 | 1M | 1M |
| Q1 2025 | 128 | 16M | 83.4% | 27 / 36 | 48 / 11 | 2M | 1M |
| Q4 2024 | 115 | 16M | 81.6% | 18 / 34 | 44 / 32 | 1M | 1M |
| Q3 2024 | 129 | 16M | 80.6% | 27 / 43 | 37 / 12 | 3M | 1M |
| Q2 2024 | 115 | 15M | 76.5% | 29 / 37 | 31 / 11 | 1M | 1M |
| Q1 2024 | 98 | 15M | 78.3% | 14 / 24 | 38 / 9 | 1M | 1M |
| Q4 2023 | 93 | 15M | 76.9% | 8 / 37 | 33 / 13 | 1M | 1M |
| Q3 2023 | 98 | 15M | 76.5% | 13 / 28 | 45 / 10 | 1M | 1M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of ATEX | Value | % of fund | As of |
|---|---|---|---|---|---|
| T. Rowe Price Small-Cap Stock Fund, Inc. | 725,484 | 3.70% | $74.68M | 0.80% | Jun 30, 2026 |
| Janus Henderson Contrarian Fund | 634,831 | 3.24% | $65.35M | 1.19% | Jun 30, 2026 |
| T. Rowe Price New Horizons Fund, Inc. | 470,800 | 2.40% | $48.46M | 0.33% | Jun 30, 2026 |
| T. Rowe Price Institutional Small-Cap Stock Fund | 386,817 | 1.97% | $39.82M | 0.79% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 327,993 | 1.67% | $33.76M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 298,050 | 1.52% | $30.68M | 0.04% | Jun 30, 2026 |
| 1290 VT GAMCO Small Company Value Portfolio | 262,000 | 1.34% | $26.97M | 0.60% | Jun 30, 2026 |
| T. Rowe Price Small-Cap Value Fund, Inc. | 237,988 | 1.21% | $24.50M | 0.23% | Jun 30, 2026 |
| State Street(R) SPDR(R) S&P(R) Telecom ETF | 220,656 | 1.13% | $22.71M | 3.19% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 214,766 | 1.10% | $22.11M | 0.02% | Jun 30, 2026 |
| Invesco Dorsey Wright Technology Momentum ETF | 160,831 | 0.82% | $14.96M | 2.57% | Jul 31, 2026 |
| Fidelity Small Cap Index Fund | 125,779 | 0.64% | $11.70M | 0.03% | Jul 31, 2026 |
| iShares Russell 2000 Growth ETF | 107,877 | 0.55% | $11.10M | 0.07% | Jun 30, 2026 |
| Select Wireless Portfolio | 101,600 | 0.52% | $6.50M | 1.69% | May 31, 2026 |
| Select Telecommunications Portfolio | 97,200 | 0.50% | $6.22M | 2.40% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Scott A. Lang | President and CEO, Director | 26,470 | 0.13% | Sep 23, 2026 |
| Morgan E. Obrien | Executive Chairman, Director | 23,973 | 0.12% | Dec 17, 2024 |
| Elena Marquez | Chief Financial Officer | 16,831 | 0.09% | Sep 29, 2026 |
| Gena L. Ashe | Chief Legal Officer & Corp Sec | 9,238 | 0.05% | Sep 11, 2026 |
| Heather Martin | Chief Marketing Officer | 26,743 | 0.14% | Sep 11, 2026 |
| Christopher Guttman-McCabe | Chief Reg & Comm Officer | 84,876 | 0.43% | Aug 27, 2026 |
| Kimberly Kerr | Chief Revenue Officer | 3,363 | 0.02% | Jul 1, 2026 |
| Timothy Gray | Chief Financial Officer | 77,022 | 0.39% | Aug 21, 2025 |
| Ryan Gerbrandt | Chief Operating Officer | 42,362 | 0.22% | Jul 15, 2025 |
| Leslie B. Daniels | Director | 50,477 | 0.26% | Sep 11, 2026 |
| Thomas R. Kuhn | Director | 17,731 | 0.09% | Aug 26, 2026 |
| William Heard | Director | 1,674,303 | 8.54% | Aug 20, 2026 |
| Jeffrey A. Altman | Director, 10% owner | 5,428,790 | 27.68% | Aug 6, 2026 |
| Mark Fleischhauer | Director | 14,367 | 0.07% | Aug 6, 2026 |
| Mahvash Yazdi | Director | 22,005 | 0.11% | Aug 6, 2026 |
| Owl Creek Asset Management, L.P. | 10% owner | 5,427,192 | 27.68% | Aug 6, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Elena Marquez Chief Financial Officer | Sep 29, 2026 | Tax withholding | −1,325 | $81.75 | $108.32K | 16,831 |
| Scott A. Lang President and CEO, Director | Sep 21, 2026 | Sale(10b5-1 plan) | −15,000 | $80.00 | $1.20M | 26,470 |
| Scott A. Lang President and CEO, Director | Sep 21, 2026 | Sale | −15,000 | $80.00 | $1.20M | 26,470 |
| Leslie B. Daniels Director | Sep 10, 2026 | Sale | −2,500 | $83.83 | $209.58K | 43,477 |
| Heather Martin Chief Marketing Officer | Sep 10, 2026 | Sale | −8,064 | $84.20 | $678.99K | 26,743 |
| Heather Martin Chief Marketing Officer | Sep 9, 2026 | Tax withholding | −3,465 | $85.44 | $296.05K | 34,807 |
| Gena L. Ashe Chief Legal Officer & Corp Sec | Sep 8, 2026 | Sale | −4,064 | $85.44 | $347.23K | 9,238 |
| Gena L. Ashe Chief Legal Officer & Corp Sec | Sep 8, 2026 | Option exercise | +6,833 | $34.96 | $238.88K | 16,071 |
| Gena L. Ashe Chief Legal Officer & Corp Sec | Sep 8, 2026 | Sale | −293 | $85.44 | $25.03K | 9,238 |
| Gena L. Ashe Chief Legal Officer & Corp Sec | Sep 8, 2026 | Tax withholding | −2,769 | $86.27 | $238.88K | 13,302 |
| Gena L. Ashe Chief Legal Officer & Corp Sec | Sep 8, 2026 | Sale | −293 | $85.44 | $25.03K | 9,238 |
| Gena L. Ashe Chief Legal Officer & Corp Sec | Sep 8, 2026 | Sale | −4,064 | $85.44 | $347.23K | 5,174 |
| Leslie B. Daniels Director | Sep 4, 2026 | Sale | −2,900 | $87.31 | $253.20K | 47,177 |
| Leslie B. Daniels Director | Sep 4, 2026 | Sale | −1,200 | $86.50 | $103.80K | 45,977 |
| Leslie B. Daniels Director | Sep 3, 2026 | Sale | −6,000 | $87.15 | $522.90K | 50,077 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Aug 25, 2026 | Option exercise | +40,000 | $34.72 | $1.39M | 84,876 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Aug 25, 2026 | Tax withholding | −16,561 | $90.38 | $1.50M | 68,315 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Aug 25, 2026 | Sale | −5,372 | $93.59 | $502.77K | 62,943 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Aug 25, 2026 | Sale | −2,696 | $90.61 | $244.28K | 44,876 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Aug 25, 2026 | Sale | −7,791 | $92.77 | $722.77K | 55,152 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Aug 25, 2026 | Sale | −7,580 | $91.69 | $695.01K | 47,572 |
| Thomas R. Kuhn Director | Aug 24, 2026 | Sale | −400 | $91.01 | $36.40K | 17,731 |
| Thomas R. Kuhn Director | Aug 24, 2026 | Sale | −790 | $90.00 | $71.10K | 18,131 |
| Thomas R. Kuhn Director | Aug 24, 2026 | Sale | −4,418 | $89.12 | $393.73K | 18,921 |
| Thomas R. Kuhn Director | Aug 24, 2026 | Sale | −4,392 | $88.18 | $387.29K | 23,339 |
| Thomas R. Kuhn Director | Aug 24, 2026 | Option exercise | +10,000 | $33.62 | $336.20K | 27,731 |
| William Heard Director | Aug 19, 2026 | Gift | −5,400 | – | – | 3,965 |
| William Heard Director | Aug 14, 2026 | Sale | −46,400 | $90.11 | $4.18M | 1,670,338 |
| Scott A. Lang President and CEO, Director | Aug 14, 2026 | Sale | −800 | $91.69 | $73.35K | 75,727 |
| Scott A. Lang President and CEO, Director | Aug 14, 2026 | Sale | −10,087 | $90.87 | $916.61K | 65,640 |
| Scott A. Lang President and CEO, Director | Aug 14, 2026 | Sale | −18,797 | $90.16 | $1.69M | 46,843 |
| Scott A. Lang President and CEO, Director | Aug 14, 2026 | Sale | −5,373 | $88.96 | $477.98K | 41,470 |
| Jeffrey A. Altman Director, 10% owner | Aug 4, 2026 | Award | +1,598 | – | – | 17,014 |
| William Heard Director | Aug 4, 2026 | Award | +1,598 | – | – | 11,252 |
| Leslie B. Daniels Director | Aug 4, 2026 | Award | +1,598 | – | – | 56,077 |
| Mahvash Yazdi Director | Aug 4, 2026 | Award | +1,598 | – | – | 21,005 |
| Mark Fleischhauer Director | Aug 4, 2026 | Award | +1,598 | – | – | 14,367 |
| Elena Marquez Chief Financial Officer | Jul 13, 2026 | Tax withholding | −231 | $100.96 | $23.32K | 18,156 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jul 13, 2026 | Tax withholding | −1,516 | $100.96 | $153.06K | 76,291 |
| Thomas R. Kuhn Director | Jun 18, 2026 | Sale | −1,654 | $79.52 | $131.53K | 17,731 |
| Scott A. Lang President and CEO, Director | Jun 18, 2026 | Sale | −170 | $80.25 | $13.64K | 76,527 |
| Elena Marquez Chief Financial Officer | Jun 17, 2026 | Option exercise | +1,226 | $40.00 | $49.04K | 22,678 |
| Elena Marquez Chief Financial Officer | Jun 17, 2026 | Sale | −4,291 | $79.50 | $341.13K | 18,387 |
| Mahvash Yazdi Director | Jun 16, 2026 | Sale | −7,000 | $80.00 | $560.00K | 19,407 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −21,434 | $80.63 | $1.73M | 131,112 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −21,045 | $82.39 | $1.73M | 75,197 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −34,870 | $81.51 | $2.84M | 96,242 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −21,050 | $83.86 | $1.77M | 54,147 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −5,030 | $79.53 | $400.04K | 152,546 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −11,668 | $78.73 | $918.62K | 157,576 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −7,755 | $84.40 | $654.52K | 46,392 |
| Mark Fleischhauer Director | Jun 15, 2026 | Sale | −3,500 | $79.83 | $279.41K | 12,769 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Option exercise | +25,511 | $49.39 | $1.26M | 169,244 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −13,324 | $84.29 | $1.12M | 77,807 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −16,381 | $83.72 | $1.37M | 91,131 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −26,411 | $82.27 | $2.17M | 107,512 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Sale | −35,321 | $81.32 | $2.87M | 133,923 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Option exercise | +11,750 | $25.75 | $302.56K | 58,142 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Option exercise | +6,715 | $42.14 | $282.97K | 143,733 |
| Christopher Guttman-McCabe Chief Reg & Comm Officer | Jun 15, 2026 | Option exercise | +20,000 | $37.42 | $748.40K | 137,018 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Marquez Elena Officer | Oct 9, 2026 | 4,981 | $400.61K | Oct 9, 2026 | Restricted Stock |
| Lang Scott Officer, Director | Sep 21, 2026 | 15,000 | $1.20M | Sep 21, 2026 | Exercised Shares |
| Martin Heather Officer | Sep 10, 2026 | 8,064 | $679.00K | Sep 10, 2026 | Restricted Stock |
| L. Ashe Gena Officer | Sep 8, 2026 | 4,357 | $372.26K | Sep 8, 2026 | Restricted Stock |
| Guttman-McCabe Christopher Officer | Aug 25, 2026 | 23,439 | $2.16M | Aug 25, 2026 | Stock Option Exercise |
| Kuhn Thomas Director | Aug 24, 2026 | 10,000 | $888.53K | Aug 24, 2026 | Stock Option Exercise |
| Lang Scott Officer, Director | Aug 14, 2026 | 35,057 | $3.16M | Aug 14, 2026 | Exercised Shares |
| Marquez Elena Officer | Jun 17, 2026 | 4,291 | $341.13K | Jun 17, 2026 | Restricted Stock |
| Mahvash Yazdi Director | Jun 16, 2026 | 7,000 | $560.00K | Jun 16, 2026 | Restricted Stock Unit |
| Guttman-McCabe Christopher Officer | Jun 15, 2026 | 122,852 | $10.04M | Jun 15, 2026 | Stock Option Exercise |
| L. Ashe Gena Officer | Jun 15, 2026 | 17,711 | $1.44M | Jun 15, 2026 | Stock Option Exercise |
| L. Gerbrandt Ryan Officer | Apr 17, 2026 | 25,000 | $1.06M | Apr 17, 2026 | Stock Option Exercise |
| L. Gerbrandt Ryan Officer | Apr 16, 2026 | 26,889 | $1.08M | Apr 16, 2026 | Stock Option Exercise |
| L. Ashe Gena Officer | Mar 3, 2026 | 12,427 | $449.56K | Mar 3, 2026 | Stock Option Exercise |
| L. Gerbrandt Ryan Officer | Mar 2, 2026 | 22,595 | $837.62K | Mar 2, 2026 | Stock Option Exercise |