ATEX

Anterix Inc.

NasdaqCommunication ServicesTelephone Communications (No Radiotelephone)

Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.

Latest filingAug 27, 2026Most recent Form 4
Total buying$00 buys
Total selling$1.03B13 sells
Net open-market-$1.03B4 insiders
Open-market mix
Buy vs sell distribution by transaction count
13 transactions
0 buys0%·100%13 sells

Insider activity report

Monthly open-market purchase and sale counts
Buys Sells
1580-8-15transactionsAug 2026 sells: 13 transactions · $1.03B13AugSep

Transaction codes

By Form 4 transaction code in selected period
19transactions
  • S · Open-market sells · dominant13 · 68%
  • M · Option exercise4 · 21%
  • F · Tax withholding1 · 5%
  • G · Gifts1 · 5%

Activity by reported role

A joint filing can contribute to multiple roles
26transactions
  • Director · dominant8 · 31%
  • CO7 · 27%
  • CR7 · 27%
  • PRES4 · 15%

Distinct insiders active

Reporting-owner CIKs by month · peak Aug 2026 (4)
Aug 2026Sep 2026
4distinct insiders in 2 months

Reported Holdings After

Separated by insider, security, and ownership type
Guttman-McCabe ChristopherCommon Stock · Direct
84.9k44.9kAug 25, 2026 · 62,943 shares owned afterAug 25, 2026 · 44,876 shares owned afterAug 25, 2026 · 47,572 shares owned afterAug 25, 2026 · 68,315 shares owned afterAug 25, 2026 · 55,152 shares owned afterAug 25, 2026 · 84,876 shares owned afterAug 25, 2026Aug 25, 2026
84,876Aug 25, 2026
Kuhn Thomas R.Common Stock · Direct
27.7k17.7kAug 24, 2026 · 23,339 shares owned afterAug 24, 2026 · 18,921 shares owned afterAug 24, 2026 · 27,731 shares owned afterAug 24, 2026 · 18,131 shares owned afterAug 24, 2026 · 17,731 shares owned afterAug 24, 2026Aug 24, 2026
17,731Aug 24, 2026
Lang Scott A.Common Stock · Direct
75.7k41.5kAug 14, 2026 · 41,470 shares owned afterAug 14, 2026 · 46,843 shares owned afterAug 14, 2026 · 65,640 shares owned afterAug 14, 2026 · 75,727 shares owned afterAug 14, 2026Aug 14, 2026
75,727Aug 14, 2026
Heard WilliamCommon Stock · Indirect · By Heard Capital LLC
1.7M1.7MAug 14, 2026 · 1,670,338 shares owned afterAug 14, 2026Aug 14, 2026
1,670,338Aug 14, 2026
Heard WilliamCommon Stock, par value $0.0001 per share ("Common Stock") · Direct
4.0k4.0kAug 19, 2026 · 3,965 shares owned afterAug 19, 2026Aug 19, 2026
3,965Aug 19, 2026
Kuhn Thomas R.Stock Option (Right to Buy) · Direct
49.0k49.0kAug 24, 2026 · 48,998 shares owned afterAug 24, 2026Aug 24, 2026
48,998Aug 24, 2026
Guttman-McCabe ChristopherStock Option (Right to Buy) · Direct
00Aug 25, 2026 · 0 shares owned afterAug 25, 2026Aug 25, 2026
0Aug 25, 2026

These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.

Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells red
0 active days
Aug 03Sep 03
LessMore

Filing detail checks

Secondary metrics for the selected period
Largest buy-
Largest sale$418M
10b5-1 detected0
Amended rows0

ATEX transaction history

Filters apply within this company and selected period by default
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TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date

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Anterix Inc. Insider Activity FAQ

SEC Form 4 context

Who recently reported transactions at Anterix Inc.?

Guttman-McCabe Christopher, Kuhn Thomas R., Heard William, Lang Scott A..

When was the latest reported open-market purchase?

No code-P purchase is available for this period.

When was the latest reported open-market sale?

Guttman-McCabe Christopher reported a sale on Aug 25, 2026 valued at $24.4M. Read the SEC filing.

What is the recent purchase and sale balance?

Net open-market selling in the selected period was $10,397,192.52. Sales can occur for many non-investment reasons.

Where can I see the original SEC filing?

Every transaction row and latest-activity fact links to its original SEC filing.

What do these Form 4 transaction codes mean?

P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.