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ADTRAN Holdings, Inc. (ADTN)

ADTRAN Holdings, Inc. (ADTN) Insider Trading

Directors, officers and holders of more than 10% of ADTN report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 76 transactions on file: 4 with code P, 5 with code S and 41 with other codes.

DateInsiderCodeShares
Oct 27, 2026Terlinde ChristianA Award8,721
Aug 10, 2026Glingener ChristophA Award27,924
Aug 6, 2026Santo Timothy PP Purchase6,579
Jul 24, 2026Glingener ChristophA Award9,384
Jul 1, 2026DelSanto AnneA Award4,399
May 20, 2026Wilson James Denson JrG Gift10,469
May 20, 2026Wilson James Denson JrS Sale9,332
May 8, 2026Glingener ChristophS Sale22,277
May 8, 2026Glingener ChristophM Exercise22,277
May 8, 2026Glingener ChristophM Exercise22,277
May 7, 2026Glingener ChristophM Exercise41,220
May 7, 2026Glingener ChristophS Sale41,220
May 7, 2026Glingener ChristophM Exercise84,895
May 7, 2026Glingener ChristophS Sale84,895
May 7, 2026Glingener ChristophM Exercise84,895
May 7, 2026Glingener ChristophM Exercise41,220
Apr 1, 2026Wilson James Denson JrA Award24,908
Apr 1, 2026Santo Timothy PA Award28,252
Apr 1, 2026STANTON THOMAS RA Award170,723
Mar 19, 2026Santo Timothy PF Tax Payment1,501
Mar 4, 2026Jacqueline Hourigan RiceS Sale14,406
Jan 26, 2026STANTON THOMAS RF Tax Payment12,407
Jan 26, 2026Wilson James Denson JrA Award3,777
Jan 26, 2026Wilson James Denson JrF Tax Payment1,309
Jan 26, 2026STANTON THOMAS RA Award27,973
Jan 26, 2026STANTON THOMAS RF Tax Payment14,409
Jan 26, 2026Wilson James Denson JrF Tax Payment998
Jan 26, 2026Wilson James Denson JrF Tax Payment1,087
Jan 24, 2026STANTON THOMAS RF Tax Payment17,535
Jan 24, 2026Wilson James Denson JrF Tax Payment1,227
Jan 20, 2026Wilson James Denson JrF Tax Payment765
Jan 20, 2026STANTON THOMAS RF Tax Payment10,247
Dec 31, 2025Walker Kathryn AA Award13,809
Dec 31, 2025Theodosopoulos NikosA Award13,809
Dec 31, 2025McCray Gregory JamesA Award13,809
Dec 31, 2025Nair BalanA Award13,809
Dec 31, 2025HUSS H FENWICKA Award13,809
Dec 31, 2025Jacqueline Hourigan RiceA Award13,809
Nov 28, 2025Santo Timothy PP Purchase6,150
Nov 26, 2025Theodosopoulos NikosP Purchase12,859
Nov 24, 2025STANTON THOMAS RP Purchase40,928
Nov 17, 2025Wilson James Denson JrF Tax Payment468
Nov 17, 2025STANTON THOMAS RF Tax Payment3,355
Jul 13, 2025STANTON THOMAS RF Tax Payment5,663
Apr 13, 2025STANTON THOMAS RF Tax Payment5,408
Mar 19, 2025Santo Timothy PA Award20,444
Jan 26, 2025STANTON THOMAS RF Tax Payment9,536
Jan 26, 2025Wilson James Denson JrF Tax Payment845
Jan 26, 2025Dopfer UlrichF Tax Payment1,167
Jan 24, 2025Wilson James Denson JrA Award16,096

The full Form 4 history is on the ADTN company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.