GILDER GAGNON HOWE & CO LLC

Position in ATEX — Anterix Inc.

CIK 902464 New York, NY

Position in ATEX

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$3,379,829

+$2,828,954 QoQ

Shares Held

32,833

+250.2% QoQ

Ownership

0.167%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

#43

of 171 holders

Holding Since

Mar 2020

9 quarters on record

Voting authority Sole 0% Shared 0% None 100%

Communication Services · as of Jun 30, 2026

GILDER GAGNON HOWE & CO LLC holds $115,040,919 across 4 Telecom Services names. ATEX ranks #4 (2.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ECHO	EchoStar CORP	912,981	$92,667,571
2	CCOI	Cogent Communications Holdings, Inc.	783,783	$10,878,908
3	SKM	Sk Telecom Co Ltd	252,320	$8,114,611
4	ATEX	Anterix Inc. This page	32,833	$3,379,829

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$3,379,829	32,833	+250.2%	Shares	Sole	2026-08-14
2021-12-31	$550,875	9,375	+0.4%	Shares	Defined	2022-02-14
2021-09-30	$566,877	9,339	-0.0%	Shares	Defined	2021-11-15
2021-06-30	$560,486	9,343	+45.3%	Shares	Defined	2021-08-16
2021-03-31	$303,238	6,430	-31.0%	Shares	Defined	2021-05-17
2020-12-31	$350,356	9,318	-79.8%	Shares	Defined	2021-02-16
2020-09-30	$1,508,487	46,117	-23.8%	Shares	Defined	2020-11-16
2020-06-30	$2,744,520	60,532	+916.8%	Shares	Defined	2020-08-14
2020-03-31	$271,873	5,953	—	Shares	Defined	2020-05-15
No filing history on record for this holder in this stock.