582 filings
Page 4 of 30
DEFA14A
271k6x3ebcfue
18 Mar 22
Additional proxy soliciting materials
3:21pm
8-K
0efnjlewrthsgdzzptp9
28 Jan 22
Columbia Banking System and Umpqua Holdings Corporation Announce Receipt of Shareholder Approvals to Combine
5:01pm
425
xdu2em01fs
21 Jan 22
Business combination disclosure
12:00am
8-K
y5asxhjy 8y8nci6x2
21 Jan 22
Columbia Banking System Announces Fourth Quarter and Full Year 2021 Results
12:00am
425
bjb930wfzvuym6j9z
19 Jan 22
Business combination disclosure
9:59pm
8-K
vy77 osf41f
19 Jan 22
Other Events
9:57pm
S-3ASR
qm0k2w
29 Dec 21
Automatic shelf registration
4:36pm
8-K
zep93fir62i0p5jzgg
29 Dec 21
Other Events
4:03pm
425
olenmhlfpmzya45zml1
10 Dec 21
Business combination disclosure
5:04pm
425
inj1xcuw38
10 Dec 21
Business combination disclosure
5:04pm
425
6zw8g
9 Dec 21
Business combination disclosure
5:26pm
425
xn7k63
9 Dec 21
Business combination disclosure
5:15pm
425
00c y9777wfbr0nuk
8 Dec 21
Business combination disclosure
4:30pm
425
mby hvvfuhse60jw
8 Dec 21
Business combination disclosure
9:08am
EFFECT
ctrd5m8 uxva
6 Dec 21
Notice of effectiveness
12:15am
424B3
sg9uw3s
3 Dec 21
Prospectus supplement
4:33pm
CORRESP
6tgcs7tf8wl7f wa
2 Dec 21
Correspondence with SEC
12:00am