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Guttman-McCabe Christopher's Form 4/A amendment

Amended

Anterix Inc. (ATEX) · filed Aug 14, 2026

Accession no.
0001828490-26-000016
Filed
Aug 14, 2026, 4:37 PM ET
Trade date
Jun 15, 2026
Filing delay
60 days
Rule 10b5-1 plan
Not checked
Original filed
Jun 17, 2026

This filing lists 7 non-derivative transactions. It carries over 12 transactions from the original filing that it did not restate. Open-market sales total $10.0M. It was filed 60 days after the trade.

This amendment restates part of 0001828490-26-000011 (filed Jul 10, 2026). The transactions it did not restate still count and are listed below.

Reporting owners

A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.

Reporting owners on this filing
OwnerRelationship to the company
Guttman-McCabe ChristopherCIK 0001828490Officer (Chief Reg & Comm Officer)

Non-derivative securities (Table I)

Acquisitions and disposals of common stock and similar shares, one row per line on the filing.

Non-derivative transactions
Trade dateSecurityTransactionSharesPriceValueShares afterOwnershipFlags
Jun 15, 2026Common StockSSaleDisposed−11,668$78.73F1−$918,569.13157,576Direct
Jun 15, 2026Common StockSSaleDisposed−5,030$79.53F3−$400,033.89152,546Direct
Jun 15, 2026Common StockSSaleDisposed−21,434$80.63F4−$1,728,270.57131,112Direct
Jun 15, 2026Common StockSSaleDisposed−34,870$81.51F5−$2,842,243.2496,242Direct
Jun 15, 2026Common StockSSaleDisposed−21,045$82.39F6−$1,733,851.2575,197Direct
Jun 15, 2026Common StockSSaleDisposed−21,050$83.86F7−$1,765,244.5854,147Direct
Jun 15, 2026Common StockSSaleDisposed−7,755$84.40F8−$654,531.3146,392Direct

Carried over from the original filing

This amendment restates only part of the original filing. The original's other transactions still stand, and the trade tables on Livermore count them under this amendment.

From 0001828490-26-000008 (filed Jun 17, 2026).

Non-derivative securities (Table I)

Non-derivative transactions carried over from 0001828490-26-000008
Trade dateSecurityTransactionSharesPriceValueShares afterOwnershipFlags
Jun 15, 2026Common StockMOption exerciseAcquired+11,750$25.75+$302,562.558,142Direct
Jun 15, 2026Common StockMOption exerciseAcquired+8,000$32.50+$260,00066,142Direct
Jun 15, 2026Common StockMOption exerciseAcquired+50,876$34.40+$1,750,134.4117,018Direct
Jun 15, 2026Common StockMOption exerciseAcquired+20,000$37.42+$748,400137,018Direct
Jun 15, 2026Common StockMOption exerciseAcquired+6,715$42.14+$282,970.1143,733Direct
Jun 15, 2026Common StockMOption exerciseAcquired+25,511$49.39+$1,259,988.29169,244Direct

Derivative securities (Table II)

Derivative transactions carried over from 0001828490-26-000008
Trade dateSecurityTransactionUnderlying sharesUnit priceValueHeld afterOwnershipFlags
Jun 15, 2026Common StockMOption exerciseDisposed−11,750$0.00$00Direct
Jun 15, 2026Common StockMOption exerciseDisposed−8,000$0.00$00Direct
Jun 15, 2026Common StockMOption exerciseDisposed−50,876$0.00$00Direct
Jun 15, 2026Common StockMOption exerciseDisposed−20,000$0.00$040,000Direct
Jun 15, 2026Common StockMOption exerciseDisposed−6,715$0.00$00Direct
Jun 15, 2026Common StockMOption exerciseDisposed−25,511$0.00$00Direct

Footnotes and remarks

Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.

F1

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.07 to $79.07, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the ranges set forth in this footnote to this Form 4.

Referenced by the price of 1 transaction in Table I.

F2

This Form 4/A amends the Form 4 filed by the reporting person on June 17, 2026 (the "Original Form 4"), which due to a clerical error inadvertently reported the incorrect number of securities sold in column 4 of Table I and the amount of shares beneficially owned in column 5 of Table I. This Form 4/A is being filed solely to correct the number of securities reported in column 4 and column 5 of Table II to reflect that an additional 31,415 shares were sold. No other amendments or changes have been made to the Original Form 4, except as reported in the Form 4/A filed by the Reporting Person on July 10, 2026.

F3

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.085 to $80.035, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the ranges set forth in this footnote to this Form 4.

Referenced by the price of 1 transaction in Table I.

F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.085 to $81.07, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the ranges set forth in this footnote to this Form 4.

Referenced by the price of 1 transaction in Table I.

F5

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.09 to $82.035, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the ranges set forth in this footnote to this Form 4.

Referenced by the price of 1 transaction in Table I.

F6

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.14 to $83.095, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the ranges set forth in this footnote to this Form 4.

Referenced by the price of 1 transaction in Table I.

F7

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.225 to $84.21, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the ranges set forth in this footnote to this Form 4.

Referenced by the price of 1 transaction in Table I.

F8

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.23 to $84.90, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the ranges set forth in this footnote to this Form 4.

Referenced by the price of 1 transaction in Table I.

Read the full filing on SEC EDGAR (opens in a new tab)