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Guttman-McCabe Christopher

Disclosed activity across 1 company

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19038
SEC CIK
0001828490

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Anterix Inc.ATEX · Entity 4597Chief Reg & Comm OfficerAugust 25, 2026August 27, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Anterix Inc.

Report date August 25, 2026 · Filed August 27, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect44,876 Ending reported balance After 2026-08-25 transaction · row 6
6 source rows · reconciled sequence

Row 1 · 2026-08-25 · Exercise / conversion · Acquired 40,000 · Balance 84,876

Row 2 · 2026-08-25 · Tax withholding · Disposed 16,561 · Balance 68,315

F1: The Reporting Person exercised a stock option to purchase 40,000 shares of the Issuer's Common Stock for $37.42 per share and paid the exercise price on a cashless basis, resulting in the Issuer withholding an aggregate of 16,561 shares of the Issuer's Common Stock subject to the stock option to pay the exercise price and to satisfy its income tax withholding and remittance obligations in connection with the exercise of the stock option. The withholding of shares referenced here does not involve an open market sale of stock.

Row 3 · 2026-08-25 · Sale · Disposed 5,372 · Balance 62,943

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.215 to $93.27, 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.

Row 4 · 2026-08-25 · Sale · Disposed 7,791 · Balance 55,152

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.265 to $92.265, 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.

Row 5 · 2026-08-25 · Sale · Disposed 7,580 · Balance 47,572

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.205 to $91.22, 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.

Row 6 · 2026-08-25 · Sale · Disposed 2,696 · Balance 44,876

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.01 to $90.06, 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.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $37.42 · Expires 2034-02-28Direct0 Reported balance After 2026-08-25 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2026-08-25 · Exercise / conversion · Disposed 40,000 · Balance 0

F6: The option shares are fully vested.

Filing footnotes · ownership attribution and instrument terms

F1: The Reporting Person exercised a stock option to purchase 40,000 shares of the Issuer's Common Stock for $37.42 per share and paid the exercise price on a cashless basis, resulting in the Issuer withholding an aggregate of 16,561 shares of the Issuer's Common Stock subject to the stock option to pay the exercise price and to satisfy its income tax withholding and remittance obligations in connection with the exercise of the stock option. The withholding of shares referenced here does not involve an open market sale of stock.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.215 to $93.27, 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.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.265 to $92.265, 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.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.205 to $91.22, 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.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.01 to $90.06, 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.

F6: The option shares are fully vested.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 25, 2026 Filed Aug 27, 2026 20:44 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionStock Option (Right to Buy) · Derivative 40,000 $0.00 Strike: $37.42 $0.00
Disclosure

SEC source: 0001828490-26-000019 · wk-form4_1787863459.xml · derivative · entry 7

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 40,000 shares

Expires 2034-02-28

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: The option shares are fully vested.

Read SEC document
August 25, 2026 Filed Aug 27, 2026 20:44 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 2,696 $90.61 $244,283.21
Disclosure

SEC source: 0001828490-26-000019 · wk-form4_1787863459.xml · nonDerivative · entry 6

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,876

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.01 to $90.06, 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.

Read SEC document
August 25, 2026 Filed Aug 27, 2026 20:44 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 7,580 $91.69 $695,044.31
Disclosure

SEC source: 0001828490-26-000019 · wk-form4_1787863459.xml · nonDerivative · entry 5

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,572

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.205 to $91.22, 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.

Read SEC document
August 25, 2026 Filed Aug 27, 2026 20:44 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 7,791 $92.77 $722,764.06
Disclosure

SEC source: 0001828490-26-000019 · wk-form4_1787863459.xml · nonDerivative · entry 4

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,152

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.265 to $92.265, 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.

Read SEC document
August 25, 2026 Filed Aug 27, 2026 20:44 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 5,372 $93.59 $502,745.60
Disclosure

SEC source: 0001828490-26-000019 · wk-form4_1787863459.xml · nonDerivative · entry 3

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,943

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.215 to $93.27, 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.

Read SEC document
August 25, 2026 Filed Aug 27, 2026 20:44 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 16,561 $90.38 $1,496,783.18
Disclosure

SEC source: 0001828490-26-000019 · wk-form4_1787863459.xml · nonDerivative · entry 2

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,315

F1 · shares: The Reporting Person exercised a stock option to purchase 40,000 shares of the Issuer's Common Stock for $37.42 per share and paid the exercise price on a cashless basis, resulting in the Issuer withholding an aggregate of 16,561 shares of the Issuer's Common Stock subject to the stock option to pay the exercise price and to satisfy its income tax withholding and remittance obligations in connection with the exercise of the stock option. The withholding of shares referenced here does not involve an open market sale of stock.

Read SEC document
August 25, 2026 Filed Aug 27, 2026 20:44 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionCommon Stock 40,000 $34.72 $1,388,800.00
Disclosure

SEC source: 0001828490-26-000019 · wk-form4_1787863459.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,876

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
July 13, 2026 Filed Jul 14, 2026 20:10 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 1,516 $100.96 $153,055.36
Disclosure

SEC source: 0001828490-26-000013 · wk-form4_1784059797.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,291

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionStock Option (Right to Buy) · Derivative 25,511 $0.00 Strike: $49.39 $0.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · derivative · entry 16

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,511 shares

Expires 2032-05-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shares are fully vested.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionStock Option (Right to Buy) · Derivative 6,715 $0.00 Strike: $42.14 $0.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · derivative · entry 15

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 6,715 shares

Expires 2029-02-11

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shares are fully vested.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionStock Option (Right to Buy) · Derivative 20,000 $0.00 Strike: $37.42 $0.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · derivative · entry 14

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 20,000 shares

Expires 2034-02-28

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shares are fully vested.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionStock Option (Right to Buy) · Derivative 50,876 $0.00 Strike: $34.40 $0.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · derivative · entry 13

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 50,876 shares

Expires 2030-10-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shares are fully vested.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionStock Option (Right to Buy) · Derivative 8,000 $0.00 Strike: $32.50 $0.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · derivative · entry 12

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,000 shares

Expires 2028-02-05

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shares are fully vested.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionStock Option (Right to Buy) · Derivative 11,750 $0.00 Strike: $25.75 $0.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · derivative · entry 11

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 11,750 shares

Expires 2027-02-27

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shares are fully vested.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 13,324 $84.29 $1,123,077.30
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 10

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,807

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.07 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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 16,381 $83.72 $1,371,471.38
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 9

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,131

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.06 to $84.06, 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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 26,411 $82.27 $2,172,904.28
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 8

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,512

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.99 to $82.89, 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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 35,321 $81.32 $2,872,430.88
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 7

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 133,923

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.98 to $81.89, 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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionCommon Stock 25,511 $49.39 $1,259,988.29
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 6

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,244

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionCommon Stock 6,715 $42.14 $282,970.10
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 5

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 143,733

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionCommon Stock 20,000 $37.42 $748,400.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 4

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,018

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionCommon Stock 50,876 $34.40 $1,750,134.40
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 3

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,018

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionCommon Stock 8,000 $32.50 $260,000.00
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 2

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,142

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 23:11 UTC Anterix Inc. ATEX · Entity 4597 Exercise / conversionCommon Stock 11,750 $25.75 $302,562.50
Disclosure

SEC source: 0001828490-26-000008 · wk-form4_1781737905.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,142

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 15, 2026 Filed Aug 14, 2026 20:37 UTC Amendment Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 7,755 $84.40 $654,531.31
Disclosure

SEC source: 0001828490-26-000016 · wk-form4a_1786739874.xml · nonDerivative · entry 7

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,392

F8 · price: 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.

F2 · balance_after: 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.

Read SEC document
June 15, 2026 Filed Aug 14, 2026 20:37 UTC Amendment Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 21,050 $83.86 $1,765,244.58
Disclosure

SEC source: 0001828490-26-000016 · wk-form4a_1786739874.xml · nonDerivative · entry 6

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,147

F7 · price: 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.

F2 · balance_after: 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.

Read SEC document
June 15, 2026 Filed Aug 14, 2026 20:37 UTC Amendment Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 21,045 $82.39 $1,733,851.25
Disclosure

SEC source: 0001828490-26-000016 · wk-form4a_1786739874.xml · nonDerivative · entry 5

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,197

F6 · price: 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.

F2 · balance_after: 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.

Read SEC document
June 15, 2026 Filed Aug 14, 2026 20:37 UTC Amendment Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 34,870 $81.51 $2,842,243.24
Disclosure

SEC source: 0001828490-26-000016 · wk-form4a_1786739874.xml · nonDerivative · entry 4

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,242

F5 · price: 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.

F2 · balance_after: 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.

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June 15, 2026 Filed Aug 14, 2026 20:37 UTC Amendment Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 21,434 $80.63 $1,728,270.57
Disclosure

SEC source: 0001828490-26-000016 · wk-form4a_1786739874.xml · nonDerivative · entry 3

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,112

F4 · price: 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.

F2 · balance_after: 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.

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June 15, 2026 Filed Aug 14, 2026 20:37 UTC Amendment Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 5,030 $79.53 $400,033.89
Disclosure

SEC source: 0001828490-26-000016 · wk-form4a_1786739874.xml · nonDerivative · entry 2

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,546

F3 · price: 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.

F2 · balance_after: 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.

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June 15, 2026 Filed Aug 14, 2026 20:37 UTC Amendment Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 11,668 $78.73 $918,569.13
Disclosure

SEC source: 0001828490-26-000016 · wk-form4a_1786739874.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,576

F1 · price: 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.

F2 · balance_after: 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.

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May 20, 2026 Filed May 22, 2026 23:48 UTC Anterix Inc. ATEX · Entity 4597 GrantStock Option (Right to Buy) · Derivative 23,271 $0.00 Strike: $60.90 $0.00
Disclosure

SEC source: 0001828490-26-000005 · wk-form4_1779493687.xml · derivative · entry 2

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,271

Underlying: Common Stock · 23,271 shares

Expires 2036-05-20

F2 · derivative.exercise_date: The option shares vest and become exercisable over three years, with 1/3 vesting on May 20, 2027, and 1/12 vesting quarterly thereafter on August 10, November 10, February 10, and May 20 of each year through May 20, 2029.

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May 20, 2026 Filed May 22, 2026 23:48 UTC Anterix Inc. ATEX · Entity 4597 GrantCommon Stock 4,926 $0.00 $0.00
Disclosure

SEC source: 0001828490-26-000005 · wk-form4_1779493687.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,392

F1 · shares: Represents the issuance of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of Issuer's Common Stock. The RSUs vest over three years, with 1/3 vesting on May 20, 2027, and 1/12 vesting quarterly thereafter on August 10, November 10, February 10, and May 20 of each year through May 20, 2029.

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May 18, 2026 Filed May 20, 2026 20:48 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 1,426 $57.06 $81,367.56
Disclosure

SEC source: 0001828490-26-000003 · wk-form4_1779310080.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,466

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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July 12, 2025 Filed Jul 15, 2025 22:58 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 1,517 $23.95 $36,332.15
Disclosure

SEC source: 0001304492-25-000074 · wk-form4_1752620293.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,892

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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May 20, 2025 Filed May 22, 2025 19:21 UTC Anterix Inc. ATEX · Entity 4597 GrantStock Option (Right to Buy) · Derivative 53,491 $0.00 Strike: $34.96 $0.00
Disclosure

SEC source: 0001304492-25-000042 · wk-form4_1747941709.xml · derivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,491

Underlying: Common Stock · 53,491 shares

Expires 2035-05-20

F1 · derivative.exercise_date: The option shares subject to this option shall vest and become exercisable in three equal annual installments, with 1/3 of the option shares vesting and becoming exercisable on May 20, 2026, and with the remaining option shares vesting and becoming exercisable in 2 equal annual installments thereafter.

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May 16, 2025 Filed May 20, 2025 21:36 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 1,427 $28.42 $40,555.34
Disclosure

SEC source: 0001304492-25-000034 · wk-form4_1747776985.xml · nonDerivative · entry 2

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,409

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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May 15, 2025 Filed May 20, 2025 21:36 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 2,452 $28.06 $68,803.12
Disclosure

SEC source: 0001304492-25-000034 · wk-form4_1747776985.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,836

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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January 16, 2025 Filed Jan 21, 2025 22:29 UTC Anterix Inc. ATEX · Entity 4597 GrantStock Option (Right to Buy) · Derivative 67,774 $0.00 Strike: $27.83 $0.00
Disclosure

SEC source: 0001304492-25-000014 · wk-form4_1737498536.xml · derivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,774

Underlying: Common Stock · 67,774 shares

Expires 2035-01-16

F1 · derivative.exercise_date: The shares subject to this option shall vest and become exercisable in three equal annual installments with vesting commencing on January 16, 2025, subject to the Reporting Person's continuous service to the Issuer through each such vesting date.

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November 15, 2024 Filed Nov 19, 2024 22:33 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 3,447 $31.93 $110,062.71
Disclosure

SEC source: 0001304492-24-000123 · wk-form4_1732055624.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,288

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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August 06, 2024 Filed Aug 8, 2024 21:01 UTC Anterix Inc. ATEX · Entity 4597 GrantStock Option (Right to Buy) · Derivative 85,000 $0.00 Strike: $33.56 $0.00
Disclosure

SEC source: 0001304492-24-000108 · wk-form4_1723150879.xml · derivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,000

Underlying: Common Stock · 85,000 shares

Expires 2034-08-06

F1 · security: On March 27, 2024, the Compensation Committee of the Board of Directors of the Issuer granted the Reporting Person the stock options, at a strike price of $33.56 per share based upon the closing price of the Issuer's common stock on the Nasdaq on such date. In accordance with Nasdaq Listing Rules, the granted stock options were subject to, and were not exercisable until, the Issuer's stockholders approved an authorization of minimum shares of common stock underlying such stock options to exercise the referenced award. On August 6, 2024, stockholders of the Issuer approved Amendment No. 1 to the Issuer's 2023 Stock Plan, which authorized an additional 1,100,000 shares under the Issuer's 2023 Stock Plan and satisfied the award conditions of the Reporting Person's stock option award.

F2 · derivative.exercise_date: The option shares will vest and become exercisable by the Reporting Person, if he is employed by the Issuer, on March 27, 2027, unless exercisable sooner in accordance with the terms of the award agreement or any other applicable agreement, arrangement or policy of the Issuer.

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July 12, 2024 Filed Jul 15, 2024 20:38 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 1,518 $41.51 $63,012.18
Disclosure

SEC source: 0001304492-24-000094 · wk-form4_1721075882.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,735

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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May 17, 2024 Filed May 21, 2024 18:13 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 1,427 $33.52 $47,833.04
Disclosure

SEC source: 0001304492-24-000062 · wk-form4_1716315207.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,253

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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May 15, 2024 Filed May 18, 2024 01:59 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 2,444 $32.72 $79,967.68
Disclosure

SEC source: 0001304492-24-000054 · wk-form4_1715997578.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,680

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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February 28, 2024 Filed Mar 2, 2024 02:27 UTC Anterix Inc. ATEX · Entity 4597 GrantStock Option (Right to Buy) · Derivative 60,000 $0.00 Strike: $37.42 $0.00
Disclosure

SEC source: 0001304492-24-000028 · wk-form4_1709346466.xml · derivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-02-28

F1 · derivative.exercise_date: 8,000 of the option shares vest and become exercisable on May 22, 2024; 32,000 additional option shares vest and become exercisable on May 22, 2025; and the remaining 20,000 unvested option shares vest and become exercisable on May 22, 2026.

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November 15, 2023 Filed Nov 17, 2023 23:11 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 3,447 $32.08 $110,579.76
Disclosure

SEC source: 0001209191-23-055876 · doc4.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,124

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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July 12, 2023 Filed Jul 14, 2023 23:09 UTC Anterix Inc. ATEX · Entity 4597 GrantCommon Stock 10,087 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-042311 · doc4.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,571

F1 · shares: Represents the issuance of restricted stock units ("RSUs"). The RSUs vest and become exercisable in 3 equal annual installments beginning on July 12, 2024.

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May 18, 2023 Filed May 22, 2023 22:53 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 3,868 $31.11 $120,333.48
Disclosure

SEC source: 0001209191-23-031594 · doc4.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,484

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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November 25, 2022 Filed Nov 29, 2022 00:19 UTC Anterix Inc. ATEX · Entity 4597 SaleCommon Stock 8,332 $36.21 $301,660.06
Disclosure

SEC source: 0001209191-22-058892 · doc4.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,352

F1 · price: This transaction was executed in multiple sales through a sale order executed by a broker-dealer at prices ranging from $35.93 to $36.64. The price reported in this column reflects the weighted average sale price. The Reporting Person will provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

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November 15, 2022 Filed Nov 17, 2022 22:53 UTC Anterix Inc. ATEX · Entity 4597 Tax withholdingCommon Stock 3,447 $36.98 $127,470.06
Disclosure

SEC source: 0001209191-22-057653 · doc4.xml · nonDerivative · entry 1

Guttman-McCabe Christopher · CIK 0001828490 · Chief Reg & Comm Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,684

F1 · shares: The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.