Christoph Glingener

CIK: 0001943622

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (30.0%)

Position reduction

Option Exercises (M)3 (30.0%)

Derivative conversions

Awards (A)4 (40.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

ADTN

ADTRAN Holdings, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (10 total)

ADTN
ADTRAN Holdings, Inc.
Aug 10, 2026
Award(A)
Direct
27.9K shares-
ADTN
ADTRAN Holdings, Inc.
Jul 24, 2026
Award(A)
Direct
9.4K shares-
ADTN
ADTRAN Holdings, Inc.
May 8, 2026
Exercise(M)
Direct
22.3K shares at avg. $12.17$271K
ADTN
ADTRAN Holdings, Inc.
May 8, 2026
Sale(S)
Direct
22.3K shares at avg. $15.00$334K
ADTN
ADTRAN Holdings, Inc.
May 7, 2026
Exercise(M)
Direct
41.2K shares at avg. $7.01$289K
ADTN
ADTRAN Holdings, Inc.
May 7, 2026
Sale(S)
Direct
41.2K shares at avg. $14.73$607K
ADTN
ADTRAN Holdings, Inc.
May 7, 2026
Exercise(M)
Direct
84.9K shares at avg. $12.17$1.0M
ADTN
ADTRAN Holdings, Inc.
May 7, 2026
Sale(S)
Direct
84.9K shares at avg. $15.06$1.3M
ADTN
ADTRAN Holdings, Inc.
Jan 24, 2025
Award(A)
Direct
13.9K shares-
ADTN
ADTRAN Holdings, Inc.
Jan 24, 2025
Award(A)
Direct
13.9K shares-

		Type	Shares	Price		Ownership
Aug 10, 2026	ADTN ADTRAN Holdings, Inc.	Award(A)	27,924	-	$0	Direct
Jul 24, 2026	ADTN ADTRAN Holdings, Inc.	Award(A)	9,384	-	$0	Direct
May 8, 2026	ADTN ADTRAN Holdings, Inc.	Exercise(M)	22,277	$12.17	$271,111	Direct
May 8, 2026	ADTN ADTRAN Holdings, Inc.	Sale(S)	22,277	$15.00	$334,155	Direct
May 7, 2026	ADTN ADTRAN Holdings, Inc.	Exercise(M)	41,220	$7.01	$288,952	Direct
May 7, 2026	ADTN ADTRAN Holdings, Inc.	Sale(S)	41,220	$14.73	$607,171	Direct
May 7, 2026	ADTN ADTRAN Holdings, Inc.	Exercise(M)	84,895	$12.17	$1,033,172	Direct
May 7, 2026	ADTN ADTRAN Holdings, Inc.	Sale(S)	84,895	$15.06	$1,278,519	Direct
Jan 24, 2025	ADTN ADTRAN Holdings, Inc.	Award(A)	13,907	-	$0	Direct
Jan 24, 2025	ADTN ADTRAN Holdings, Inc.	Award(A)	13,870	-	$0	Direct

1-10 of 10 transactions

About Glingener Christoph

Glingener Christoph (SEC CIK 0001943622) files insider reports with the SEC as Chief Technology Officer of ADTRAN Holdings, Inc. (ADTN).

Signal8 holds 4 ownership filings by Glingener Christoph, all Form 4s, filed between Jan 28, 2025 and Aug 10, 2026. Those filings report 10 transactions, from Jan 24, 2025 to Aug 10, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Glingener Christoph's filings is in HUNTSVILLE, AL.

Recent filings by Glingener Christoph

Aug 10, 2026: Grant or award of ADTN shares (Form 4, code A).
Jul 24, 2026: Grant or award of ADTN shares (Form 4, code A).
May 8, 2026: Option exercise of ADTN shares (Form 4, code M).
May 8, 2026: Open-market sale of ADTN shares (Form 4, code S).
May 7, 2026: Option exercise of ADTN shares (Form 4, code M).

Other insiders filing for ADTRAN Holdings, Inc. (ADTN)

Terlinde Christian, Director
Santo Timothy P, SVP of Finance; CFO
DelSanto Anne, Director
Wilson James Denson Jr, Chief Revenue Officer
STANTON THOMAS R, Chairman & CEO
Jacqueline Hourigan Rice, Director

How to read Form 4 transaction codes