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Public ownership evidence

Anterix Inc. Common Stock (ATEX) Ownership Disclosures

Read ATEX insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-10-132026-10-09Marquez ElenaS210Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-09 and its public availability date is 2026-10-13. Subtracting those calendar dates gives 4 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0002090789-26-000016 ↗SEC 0002090789-26-000016 ↗SEC 0002090789-26-000016 ↗

Recent Form 4 activity

Inspect all 38 displayed rows: Recent Form 4 activity

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2026-10-132026-10-09Marquez ElenaS210Not reported
2026-10-132026-10-09Marquez ElenaS1,017Not reported
2026-10-132026-10-09Marquez ElenaS100Not reported
2026-10-132026-10-09Marquez ElenaS400Not reported
2026-10-132026-10-09Marquez ElenaS3,254Not reported
2026-09-232026-09-21Lang Scott A.S15,000Not reported
2026-09-222026-09-21Lang Scott A.S15,000Not reported
2026-09-112026-09-10Martin HeatherS8,064Not reported
2026-09-112026-09-08Ashe Gena LS4,064Not reported
2026-09-112026-09-08Ashe Gena LS293Not reported
2026-09-112026-09-10DANIELS LESLIE BS2,500Not reported
2026-09-082026-09-08Ashe Gena LS4,064Not reported
2026-09-082026-09-08Ashe Gena LS293Not reported
2026-09-082026-09-04DANIELS LESLIE BS1,200Not reported
2026-09-082026-09-04DANIELS LESLIE BS2,900Not reported
2026-09-082026-09-03DANIELS LESLIE BS6,000Not reported
2026-08-282026-08-25Guttman-McCabe ChristopherS2,696Not reported
2026-08-282026-08-25Guttman-McCabe ChristopherS7,580Not reported
2026-08-282026-08-25Guttman-McCabe ChristopherS7,791Not reported
2026-08-282026-08-25Guttman-McCabe ChristopherS5,372Not reported
2026-08-272026-08-24Kuhn Thomas R.S400Not reported
2026-08-272026-08-24Kuhn Thomas R.S790Not reported
2026-08-272026-08-24Kuhn Thomas R.S4,418Not reported
2026-08-272026-08-24Kuhn Thomas R.S4,392Not reported
2026-08-272026-06-18Kuhn Thomas R.S1,654Not reported
2026-08-272026-05-20Kuhn Thomas R.A2,791Not reported
2026-08-192026-08-14Heard WilliamS46,400Not reported
2026-08-182026-08-14Lang Scott A.S5,373Not reported
2026-08-182026-08-14Lang Scott A.S18,797Not reported
2026-08-182026-08-14Lang Scott A.S10,087Not reported
2026-08-182026-08-14Lang Scott A.S800Not reported
2026-08-152026-06-15Guttman-McCabe ChristopherS7,755Not reported
2026-08-152026-06-15Guttman-McCabe ChristopherS21,050Not reported
2026-08-152026-06-15Guttman-McCabe ChristopherS21,045Not reported
2026-08-152026-06-15Guttman-McCabe ChristopherS34,870Not reported
2026-08-152026-06-15Guttman-McCabe ChristopherS21,434Not reported
2026-08-152026-06-15Guttman-McCabe ChristopherS5,030Not reported
2026-08-152026-06-15Guttman-McCabe ChristopherS11,668Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25158$16,265None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2516,265$158,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-202,716$279,585None
Transamerica Financial Advisors, LLC2026-06-302026-08-183$308None
Proficio Capital Partners LLC2026-06-302026-08-183,000$308,820None
DARK FOREST CAPITAL MANAGEMENT LP2026-06-302026-08-154,720$485,877None
TORONTO DOMINION BANK2026-06-302026-08-1515,600$1,605,864None
CAXTON ASSOCIATES LLP2026-06-302026-08-1513,432$1,382,690None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-156,100$627,934None
Quarry LP2026-06-302026-08-1511$1,132None
Panoramic Capital, LLC2026-06-302026-08-15154,377$15,891,568None
T. Rowe Price Investment Management, Inc.2026-06-302026-08-152,348,019$241,706,000None
XTX Topco Ltd2026-06-302026-08-158,582$883,431None
Aquatic Capital Management LLC2026-06-302026-08-154,299$442,539None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15139,278$14,337,277None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15139,278$14,337,277None
Caption Management, LLC2026-06-302026-08-1540,000$4,117,600Put
Caption Management, LLC2026-06-302026-08-1525,000$2,573,500Call
Caption Management, LLC2026-06-302026-08-1517,532$1,804,744None
OSAIC HOLDINGS, INC.2026-06-302026-08-15192$19,763None
PLUSTICK MANAGEMENT LLC2026-06-302026-08-15180,000$18,529,200None
PLUSTICK MANAGEMENT LLC2026-06-302026-08-15340,000$34,999,600None
Trexquant Investment LP2026-06-302026-08-1553,423$5,499,364None
MetLife Investment Management, LLC2026-06-302026-08-156,651$684,654None
JANE STREET GROUP, LLC2026-06-302026-08-1517,506$1,802,068None
JANE STREET GROUP, LLC2026-06-302026-08-1510,300$1,060,282Put
JANE STREET GROUP, LLC2026-06-302026-08-1569,700$7,174,918Call
LMR Partners LLP2026-06-302026-08-152,022$208,145None
Potrero Capital Research LLC2026-06-302026-08-1546,525$4,789,284None
Legal & General Group Plc2026-06-302026-08-151,037$106,749None
Legal & General Group Plc2026-06-302026-08-151,115$114,778None
HRT FINANCIAL LP2026-06-302026-08-1530,673$3,157,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15199,400$20,526,236Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1582,500$8,492,550Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-155,584$574,817None
GARNET EQUITY CAPITAL HOLDINGS, INC.2026-06-302026-08-15156,119$16,070,890None
683 Capital Management, LLC2026-06-302026-08-1566,000$6,794,040None
Gotham Asset Management, LLC2026-06-302026-08-158,867$912,769None
Beartown Capital Management, LLC2026-06-302026-08-1575,000$7,720,500None
Granahan Investment Management, LLC2026-06-302026-08-1572,121$7,424,136None
Marble Bar Asset Management LLP2026-06-302026-08-1568,248$7,025,449None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1530,340$3,123,200None
Numerai GP LLC2026-06-302026-08-1510,271$1,057,297None
Atom Investors LP2026-06-302026-08-154,124$424,525None
Balyasny Asset Management L.P.2026-06-302026-08-153,254$334,967None
QVT Financial LP2026-06-302026-08-15383,941$39,522,887None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-15296$26,542None
Owl Creek Asset Management, L.P.2026-06-302026-08-155,411,776$557,088,221None
GILDER GAGNON HOWE & CO LLC2026-06-302026-08-1532,833$3,379,829None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1513,016$1,339,867None

90-day public filing window, up to 50 source positions.

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗MERCER GLOBAL ADVISORS INC /ADV ↗Transamerica Financial Advisors, LLC ↗Proficio Capital Partners LLC ↗DARK FOREST CAPITAL MANAGEMENT LP ↗TORONTO DOMINION BANK ↗CAXTON ASSOCIATES LLP ↗Aster Capital Management (DIFC) Ltd ↗Quarry LP ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.