Home β€Ί Stock analysis β€Ί ADTN

Adtran (ADTN) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)

Updated Oct 16, 2026, 4:00 PM ET

What changed since yesterday

ADTN slides 3.4% to $6.31, a 52-week low, 7 down days in a row. Closed at $6.31, -3.37% vs the prior close of $6.53. Day range $6.28–$6.55, opened at $6.50.

Last close$6.31-3.37%
Day range6.28–6.55
Open6.50
Volume1.12M
52-week range6.28–19.98
Avg volume (20d)1.60M

ADTN daily analysis β€” what happened

A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.

Oct 16, 2026 β€” ADTN slides 3.4% to $6.31, a 52-week low, 7 down days in a row
Oct 15, 2026 β€” ADTN dips 1.7% to $6.53, a 52-week low, 6 down days in a row
Oct 14, 2026 β€” ADTN slides 4.6% to $6.64, a 52-week low, 5 down days in a row
Oct 13, 2026 β€” ADTN dips 1.0% to $6.96, 4 down days in a row
Oct 12, 2026 β€” ADTN slides 5.8% to $7.03, 3 down days in a row
Oct 9, 2026 β€” ADTN dips 0.4% to $7.46
Oct 8, 2026 β€” ADTN slides 3.5% to $7.49
Oct 7, 2026 β€” ADTN rises 1.8% to $7.76, a 1-month high, 3 up days in a row
Oct 6, 2026 β€” ADTN jumps 6.6% to $7.62, a 1-month high
Oct 5, 2026 β€” ADTN rises 1.6% to $7.15
Oct 2, 2026 β€” ADTN dips 0.4% to $7.04

ADTN latest news & SEC filings

Every SEC filing by or about ADTN in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.

Aug 10, 2026 Β· Form 8-K β€” Major event / current report

Current report β€” a filing companies must make within 4 business days of a major event

Source: SEC EDGAR filing 0001193125-26-342359

Aug 10, 2026 Β· Form 4 β€” Insider trade

Insider trade report (Form 4) β€” a director, officer or 10%+ owner changed their holdings

Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).

Source: SEC EDGAR filing 0001193125-26-342317

Aug 7, 2026 Β· Form 4 β€” Insider trade

Insider trade report (Form 4) β€” a director, officer or 10%+ owner changed their holdings

Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.

Source: SEC EDGAR filing 0001193125-26-340206

Aug 4, 2026 Β· Form 10-Q β€” Quarterly report

Quarterly report (unaudited financial statements for the quarter)

Quarter ended Jun 30, 2026:

Source: SEC EDGAR filing 0001193125-26-331632

Aug 4, 2026 Β· Form 8-K β€” Major event / current report

Current report β€” a filing companies must make within 4 business days of a major event

This is a results-day filing: the earnings press release is attached as an exhibit.

Source: SEC EDGAR filing 0001193125-26-331458

Jul 28, 2026 Β· Form 4 β€” Insider trade

Insider trade report (Form 4) β€” a director, officer or 10%+ owner changed their holdings

Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).

Source: SEC EDGAR filing 0001193125-26-320947

Jul 23, 2026 Β· Form 8-K β€” Major event / current report

Current report β€” a filing companies must make within 4 business days of a major event

Source: SEC EDGAR filing 0001193125-26-314198

Jul 22, 2026 Β· Form 8-K β€” Major event / current report

Current report β€” a filing companies must make within 4 business days of a major event

This is a results-day filing: the earnings press release is attached as an exhibit.

Source: SEC EDGAR filing 0001193125-26-311290

Jul 17, 2026 Β· Form S-3ASR β€” S-3ASR filing

S-3ASR filing

An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.

Source: SEC EDGAR filing 0001193125-26-307471

Jul 6, 2026 Β· Form 4 β€” Insider trade

Insider trade report (Form 4) β€” a director, officer or 10%+ owner changed their holdings

Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).

Source: SEC EDGAR filing 0001193125-26-296161

Jul 1, 2026 Β· Form 3 β€” New insider holdings

Initial insider ownership statement (Form 3) β€” a new director, officer or 10% owner disclosed their holdings

Source: SEC EDGAR filing 0001193125-26-292752

Jun 26, 2026 Β· Form 11-K β€” Annual report for an employee stock plan

Annual report for an employee stock plan

Source: SEC EDGAR filing 0001193125-26-285745

Jun 26, 2026 Β· Form 8-K β€” Major event / current report

Current report β€” a filing companies must make within 4 business days of a major event

Source: SEC EDGAR filing 0001193125-26-283882

Things to know before you trade ADTN

ADTN market data (last 20 sessions)

DateOpenHighLowCloseVolume
Oct 16, 20266.506.556.286.311.12M
Oct 15, 20266.506.556.356.531.38M
Oct 14, 20266.906.906.566.641.72M
Oct 13, 20266.967.026.806.961.22M
Oct 12, 20267.417.417.017.031.24M
Oct 9, 20267.607.757.377.46871.00K
Oct 8, 20267.577.747.327.491.84M
Oct 7, 20267.507.917.477.762.22M
Oct 6, 20267.207.647.177.622.56M
Oct 5, 20267.127.186.957.151.78M
Oct 2, 20267.197.256.937.042.64M
Oct 1, 20266.917.166.797.071.86M
Sep 30, 20266.936.946.736.841.86M
Sep 29, 20266.866.916.766.871.16M
Sep 28, 20267.087.096.766.801.86M
Sep 25, 20266.987.186.887.131.60M
Sep 24, 20267.067.086.846.941.28M
Sep 23, 20267.297.317.077.11994.50K
Sep 22, 20267.187.347.097.291.25M
Sep 21, 20267.317.317.107.211.50M

About Adtran

Adtran (ADTN) is listed on the Nasdaq and classified by the SEC under β€œTelephone & Telegraph Apparatus”. Its business address is in HUNTSVILLE, AL. Fiscal year ends December 31. SEC CIK 926282.

ADTN board of directors & executives

From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).

Directors

NameRoleLatest filing
Anne DelsantoDirectorJul 6, 2026
H Fenwick HussDirectorJan 5, 2026
Hourigan Rice JacquelineDirectorMar 5, 2026
Gregory James MccrayDirectorJan 5, 2026
Balan NairDirectorJan 5, 2026
Thomas R StantonChairman & CEOApr 3, 2026
Nikos TheodosopoulosDirectorJan 5, 2026
Kathryn A WalkerDirectorJan 5, 2026

Executive officers

NameTitleLatest filing
Christoph GlingenerChief Technology OfficerAug 10, 2026
Thomas R StantonChairman & CEOApr 3, 2026
Timothy P SantoSVP of Finance; CFOAug 7, 2026
James Denson Jr WilsonChief Revenue OfficerMay 22, 2026

Recent insider buys & sales

DateInsiderTypeSharesPrice
Aug 6, 2026Timothy P SantoBuy6,579$7.60
Aug 6, 2026Timothy P SantoBuy6,579$7.60
Aug 6, 2026Timothy P SantoBuy6,579$7.60
Aug 6, 2026Timothy P SantoBuy6,579$7.60
May 20, 2026James Denson Jr WilsonSale9,332$14.72
May 20, 2026James Denson Jr WilsonSale9,332$14.72
May 20, 2026James Denson Jr WilsonSale9,332$14.72
May 20, 2026James Denson Jr WilsonSale9,332$14.72
May 8, 2026Christoph GlingenerSale22,277$15.00
May 8, 2026Christoph GlingenerSale22,277$15.00
May 8, 2026Christoph GlingenerSale22,277$15.00
May 8, 2026Christoph GlingenerSale22,277$15.00
May 7, 2026Christoph GlingenerSale84,895$15.06
May 7, 2026Christoph GlingenerSale41,220$14.73
May 7, 2026Christoph GlingenerSale84,895$15.06

ADTN financials (annual, from XBRL filings)

Fiscal year endRevenueNet incomeDiluted EPSOperating cash flow
Dec 31, 2025$1.08B$-45.66M-0.52$129.77M
Dec 31, 2024$922.72M$-459.89M-5.79$103.57M
Dec 31, 2023$1.15B$-268.85M-3.43$-43.02M
Dec 31, 2022$1.03B$-2.04M-0.03$-44.23M
Dec 31, 2021$563.00M$-8.63M-0.18$3.01M

Latest balance sheet: total assets $1.15B, total liabilities $661.30M, cash $79.24M (as of Jun 30, 2026).

ADTN earnings / results-day log

DateFilingClose that day
Aug 4, 20268-K Item 2.02 (results)$8.76
Jul 22, 20268-K Item 2.02 (results)$10.45
May 5, 20268-K Item 2.02 (results)$15.30
Feb 26, 20268-K Item 2.02 (results)$9.91
Jan 22, 20268-K Item 2.02 (results)$9.90
Nov 4, 20258-K Item 2.02 (results)$7.91
Aug 5, 20258-K Item 2.02 (results)$8.09
Jul 16, 20258-K Item 2.02 (results)$9.66
May 28, 20258-K Item 2.02 (results)$8.15
May 8, 20258-K Item 2.02 (results)$7.71
Feb 27, 20258-K Item 2.02 (results)$10.57
Nov 7, 20248-K Item 2.02 (results)$7.55

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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 16, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.