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
5abvq0rwtytvz8jpd91j
29 Mar 22
Additional proxy soliciting materials
8:03am
DEFM14A
k5ixy
2 Dec 21
Proxy related to merger
4:42pm
DEFA14A
ne4nti9cygso 4p
30 Mar 21
Additional proxy soliciting materials
9:04am
DEFA14A
gk9ezxfluepwjoxvk58z
13 Apr 20
Additional proxy soliciting materials
8:47am
DEFA14A
cudbw
2 Apr 20
Additional proxy soliciting materials
9:04am
DEFR14A
h5vv k0238hmhylgz
30 Apr 15
Revised proxy
12:00am