QUALSTAR CORP

Annual Report for period ending 2019-12-31

Quarterly Report for period ending 2019-09-30

Quarterly Report for period ending 2019-06-30

Quarterly Report for period ending 2019-03-31

Annual Report for period ending 2018-12-31

Quarterly Report for period ending 2018-09-30

Quarterly Report for period ending 2018-06-30

Quarterly Report for period ending 2018-03-31

Annual Report for period ending 2017-12-31

Quarterly Report for period ending 2017-09-30

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Notice of termination of registration of a class of securities under Section 12(b)

Notice of Effectiveness

Post-effective amendment to a registration statement that is not immediately effective upon filing

Notification filed by issuer to voluntarily withdraw a class of securities from listing and registration on a national securities exchange

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

BKF Asset Holdings, Inc.: Statement of changes in beneficial ownership of securities

RENAISSANCE TECHNOLOGIES LLC: Major Shareholders

BRONSON STEVEN N: Major Shareholders

Hou Joy C.: Initial statement of beneficial ownership of securities

BRONSON STEVEN N: Statement of changes in beneficial ownership of securities

BKF Asset Holdings, Inc.: Statement of changes in beneficial ownership of securities

BRONSON STEVEN N: Statement of changes in beneficial ownership of securities

BRONSON STEVEN N: Statement of changes in beneficial ownership of securities

BRONSON STEVEN N: Statement of changes in beneficial ownership of securities

BRONSON STEVEN N: Statement of changes in beneficial ownership of securities

Post-effective amendment to a S-8 registration statement

Post-effective amendment to a S-8 registration statement

Post-effective amendment to a S-8 registration statement

Post-effective amendment to a S-8 registration statement

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Prospectus filed pursuant to Rule 424(b)(3)

Registration statement for specified transactions by certain issuers

Registration statement for specified transactions by certain issuers

Third party tender offer statement

Definitive proxy statements

Definitive proxy statements

Definitive proxy statements

Definitive proxy statements

Preliminary proxy statement not related to a contested matter or merger/acquisition

Definitive proxy statements

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive revised proxy soliciting materials

Definitive proxy statements

Definitive revised proxy soliciting materials