ENVIRONMENTAL TECTONICS CORP

Quarterly Report for period ending 2012-11-23

Quarterly Report for period ending 2012-08-24

Quarterly Report for period ending 2012-05-25

Annual Report for period ending 2012-02-24

Notice under Rule 12b25 of inability to timely file all or part of a form 10-Q or 10-QSB for period ending 2012-05-25

Notice under Rule 12b25 of inability to timely file all or part of a Form 10-K, 10-KSB, or 10-KT for period ending 2012-02-24

Notice under Rule 12b25 of inability to timely file all or part of a form 10-Q or 10-QSB for period ending 2011-11-25

Quarterly Report for period ending 2011-11-25

Quarterly Report for period ending 2011-08-26

Quarterly Report for period ending 2011-05-27

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)

None

None

Notice of Effectiveness

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

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.

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.

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

MITCHELL WILLIAM F: Statement of changes in beneficial ownership of securities

Malone Michael: Statement of changes in beneficial ownership of securities

SAWYER GEORGE A: Statement of changes in beneficial ownership of securities

Lenfest Harold Fitzgerald: Statement of changes in beneficial ownership of securities

Malone Michael: Statement of changes in beneficial ownership of securities

MITCHELL WILLIAM F: Statement of changes in beneficial ownership of securities

Lenfest Harold Fitzgerald: Major Shareholders

SAWYER GEORGE A: Statement of changes in beneficial ownership of securities

Lenfest Harold Fitzgerald: Statement of changes in beneficial ownership of securities

Lenfest Harold Fitzgerald: 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

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

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

Registration statement for specified transactions by certain issuers

Registration statement for specified transactions by certain issuers

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 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 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 proxy statements

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