STOCK TITAN

Anterix (ATEX) CFO sells 4,291 shares and exercises stock options

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Anterix Inc.’s Chief Financial Officer Elena Marquez reported an open‑market sale and an option exercise involving the company’s common stock. On June 17, 2026, she sold 4,291 shares at $79.50 per share and exercised stock options for 1,226 shares at $40.00 per share. Following these transactions, she directly holds 18,387 shares of common stock and 2,454 stock options. The option grant referenced in the filing vests in three equal annual installments beginning on October 4, 2025.

Positive

  • None.

Negative

  • None.
Insider Marquez Elena
Role Chief Financial Officer
Sold 4,291 shs ($341K)
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 1,226 $0.00 --
Exercise Common Stock 1,226 $40.00 $49K
Sale Common Stock 4,291 $79.50 $341K
Holdings After Transaction: Stock Option (Right to Buy) — 2,454 shares (Direct, null); Common Stock — 22,678 shares (Direct, null)
Footnotes (1)
  1. [object Object]
Shares sold 4,291 shares Open-market sale of common stock on June 17, 2026
Sale price $79.50 per share Price for 4,291 common shares sold
Options exercised 1,226 shares Common shares acquired via option exercise on June 17, 2026
Option exercise price $40.00 per share Exercise or conversion price for stock options
Common shares held 18,387 shares Direct common stock ownership after reported sale
Options remaining 2,454 options Stock Option (Right to Buy) balance after exercise
Option vesting start October 4, 2025 Option shares vest in three equal annual installments beginning on this date
Option expiration April 3, 2035 Expiration date of the Stock Option (Right to Buy)
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
Stock Option (Right to Buy) financial
""security_title": "Stock Option (Right to Buy)""
derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
Chief Financial Officer financial
""officer_title": "Chief Financial Officer""
A Chief Financial Officer (CFO) is the person in charge of a company's money and financial planning. They decide how to spend, save, and invest funds to help the company grow and stay stable. Their role is important because good financial decisions keep the company healthy and successful.
vest and become exercisable financial
"The option shares vest and become exercisable in three equal annual installments"
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Marquez Elena

(Last)(First)(Middle)
3 GARRET MOUNTAIN PLAZA, SUITE 401

(Street)
WOODLAND PARK NEW JERSEY 07424

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Anterix Inc. [ ATEX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/17/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/17/2026M1,226A$4022,678D
Common Stock06/17/2026S4,291D$79.518,387D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$4006/17/2026M1,226 (1)04/03/2035Common Stock1,226$02,454D
Explanation of Responses:
1. The option shares vest and become exercisable in three equal annual installments beginning on October 4, 2025.
Remarks:
/s/ Gena L. Ashe, Attorney-in-Fact06/18/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Anterix (ATEX) CFO Elena Marquez report?

Anterix CFO Elena Marquez reported selling 4,291 common shares and exercising options for 1,226 shares. Both transactions occurred on June 17, 2026, and involved open‑market activity and derivative exercise disclosed in a Form 4 insider trading report.

How many Anterix (ATEX) shares did the CFO sell and at what price?

Elena Marquez sold 4,291 shares of Anterix common stock at a price of $79.50 per share. This open‑market sale was reported as a non‑derivative transaction and left her with a disclosed direct holding of 18,387 common shares afterward.

What stock options did the Anterix (ATEX) CFO exercise in this Form 4?

The CFO exercised stock options to acquire 1,226 Anterix common shares at an exercise price of $40.00 per share. A related derivative entry shows these options as “Stock Option (Right to Buy)” tied to the underlying common stock.

What are Elena Marquez’s Anterix (ATEX) holdings after these transactions?

After the reported transactions, Elena Marquez directly holds 18,387 shares of Anterix common stock. The filing also shows 2,454 stock options remaining, providing additional potential future ownership beyond her current common share position.

How do the Anterix (ATEX) CFO’s stock options vest and when do they expire?

According to the footnote, the option shares vest in three equal annual installments beginning on October 4, 2025. The derivative transaction table lists an expiration date for the stock option grant of April 3, 2035, defining its long‑term exercisability window.

Was the Anterix (ATEX) CFO’s sale classified as an open‑market transaction?

Yes. The Form 4 classifies the 4,291‑share disposition as an open‑market sale of common stock. The transaction code “S” and description “Sale in open market or private transaction” identify it as a straightforward, non‑derivative stock sale.