ADTRAN Holdings, Inc. (ADTN) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-07-06

ADTRAN Holdings, Inc. (ADTN) has filed 3 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-06. 3 Form 8-K material event filings were reported by ADTN in the last 90 days. 2 Form 144 notices of proposed sale were filed for ADTN stock. InsiderAlpha tracks every ADTN SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About ADTRAN Holdings, Inc. (ADTN)

SEC CIK0000926282

90-Day SEC Filing Activity

Form 4 filings (90d)3
Form 8-K filings (90d)3
Form 144 notices (90d)2
Latest Form 4 filing2026-07-06

Recent ADTN Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
DelSanto AnneInsiderA — Grant or award4.4K$0.00—SEC
Wilson James Denson JrChief Revenue OfficerG — Bona-fide gift10.5K$0.00—SEC
Wilson James Denson JrChief Revenue OfficerS — Open-market sale9.3K$14.72$137KSEC
Glingener ChristophChief Technology OfficerM — Option exercise22.3K$12.17$271KSEC
Glingener ChristophChief Technology OfficerS — Open-market sale22.3K$15.00$334KSEC
Glingener ChristophChief Technology OfficerS — Open-market sale41.2K$14.73$607KSEC
Glingener ChristophChief Technology OfficerM — Option exercise84.9K$12.17$1.03MSEC
Glingener ChristophChief Technology OfficerM — Option exercise41.2K$7.01$289KSEC
Glingener ChristophChief Technology OfficerS — Open-market sale84.9K$15.06$1.28MSEC
Santo Timothy PSVP of Finance; CFOA — Grant or award28.3K$0.00—SEC
Wilson James Denson JrChief Revenue OfficerA — Grant or award24.9K$0.00—SEC
STANTON THOMAS RChairman & CEOA — Grant or award170.7K$0.00—SEC
Santo Timothy PSVP of Finance; CFOF — Tax withholding / forfeiture1.5K$11.90$18KSEC
Jacqueline Hourigan RiceInsiderS — Open-market sale14.4K$10.29$148KSEC
Wilson James Denson JrChief Revenue OfficerF — Tax withholding / forfeiture1.3K$9.24$12KSEC

All transactions sourced from SEC EDGAR Form 4 filings for ADTRAN Holdings, Inc. (ADTN). Updated in real time as new filings are submitted to the SEC.

Most-Active ADTN Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
Glingener Christoph9$3.81M
Wilson James Denson Jr2$137K
DelSanto Anne1—

Recent ADTN Form 8-K Material Events

Recent ADTN Form 144 Notices of Proposed Sale

Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ADTN insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

ADTN Insider Trading — FAQ

What is the latest insider trade for ADTN?
ADTRAN Holdings, Inc. (ADTN) had 3 insider filings in the last 90 days, with the most recent on 2026-07-06. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying ADTN stock?
0 insider purchases of ADTN were filed in the last 90 days.
How many insiders are selling ADTN stock?
0 insider sales of ADTN were filed in the last 90 days.
Where can I see ADTN SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every ADTN SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live ADTN dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.