Financial reports
20-F
2021 FY
Annual report (foreign)
15 Apr 22
20-F
2020 FY
Annual report (foreign)
17 May 21
NT 20-F
Notice of late annual filing (foreign)
30 Apr 21
20-F
2019 FY
Annual report (foreign)
30 Apr 20
20-F
2018 FY
Annual report (foreign)
30 Apr 19
20-F
2017 FY
Annual report (foreign)
19 Apr 18
20-F
2016 FY
Annual report (foreign)
6 Apr 17
20-F
2015 FY
Annual report (foreign)
2 May 16
20-F
2014 FY
Annual report (foreign)
30 Apr 15
20-F
2013 FY
Annual report (foreign)
30 Apr 14
Current reports
6-K
O2Micro Announces Completion of Merger
3 Mar 23
6-K
O2Micro Announces Shareholders’ Approval of Merger Agreement
1 Feb 23
6-K
Current report (foreign)
19 Jan 23
6-K
O2Micro to Hold Extraordinary General Meeting of Shareholders
16 Dec 22
6-K
Current report (foreign)
16 Nov 22
6-K
O2Micro Reports Third Quarter 2022 Financial Results
4 Nov 22
6-K
Current report (foreign)
13 Oct 22
6-K
O2Micro Enters into Definitive Agreement for “Going Private” Transaction
30 Sep 22
6-K
O2Micro Announces Receipt of a Revised Preliminary Non-Binding Proposal to Acquire the Company
19 Sep 22
6-K
O2Micro Reports Second Quarter 2022 Financial Results
1 Aug 22
Registration and prospectus
15-12G
Securities registration termination
13 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Mar 23
Proxies
No filings
Other
CORRESP
Correspondence with SEC
28 Nov 22
UPLOAD
Letter from SEC
15 Nov 22
SD
Conflict minerals disclosure
18 Apr 22
SD
Conflict minerals disclosure
18 May 21
SD
Conflict minerals disclosure
21 May 20
SD
Conflict minerals disclosure
24 May 19
SD
Conflict minerals disclosure
17 May 18
SD
Conflict minerals disclosure
20 Apr 17
SD
Conflict minerals disclosure
1 Jun 16
SD
Conflict minerals disclosure
2 Jun 15
Ownership
SC 13G/A
Grandeur Peak Global Advisors, LLC
17 Mar 23
SC 13G/A
DnB Asset Management AS
10 Mar 23
SC 13D/A
Kuo Chuan-Chiung
3 Mar 23
SC 13G
Lu Kevin
24 Feb 23
SC 13G/A
RENAISSANCE TECHNOLOGIES LLC
13 Feb 23
SC 13G/A
Grandeur Peak Global Advisors, LLC
13 Feb 23
SC 13G/A
DnB Asset Management AS
31 Jan 23
SC 13D/A
Kuo Chuan-Chiung
3 Oct 22
SC 13D/A
Kuo Chuan-Chiung
20 Sep 22
SC 13D
Kuo Chuan-Chiung
3 Jun 22