41 filings
DEFA14A
ADTN
ADTRAN Holdings, Inc.
4 Apr 24
Additional proxy soliciting materials
10:45am
DEFA14A
ADTN
ADTRAN Holdings, Inc.
27 Mar 24
Additional proxy soliciting materials
9:05am
DEF 14A
ADTN
ADTRAN Holdings, Inc.
Definitive proxy
27 Mar 24
9:00am
DEFA14A
ADTN
ADTRAN Holdings, Inc.
2 May 23
Additional proxy soliciting materials
9:14pm
DEFA14A
ADTN
ADTRAN Holdings, Inc.
28 Mar 23
Additional proxy soliciting materials
10:06am
DEFA14A
bh7k1z0i94suilt shu
29 Mar 22
Additional proxy soliciting materials
8:03am
DEFM14A
qdq5vfl
2 Dec 21
Proxy related to merger
4:42pm
DEFA14A
uxuvxuw2cdrefogiu
30 Mar 21
Additional proxy soliciting materials
9:04am
DEFA14A
ss599 8zaf51i0bfmi
13 Apr 20
Additional proxy soliciting materials
8:47am
DEFA14A
l0eglhj
2 Apr 20
Additional proxy soliciting materials
9:04am
DEFR14A
6wzzq s6hsci
30 Apr 15
Revised proxy
12:00am