Notes: On May 30, 2009, the Company's common stock was delisted from trading on the NYSE AMEX. On May 20, 2009 the Company had filed a Form 25 with the SEC and AMEX requesting the delisting of its common stock from AMEX. The Board of Directors' decision to voluntarily delist its common stock from AMEX resulted from a compliance issue related to certain terms and conditions as contained in the proposed issuance of Series E Preferred Stock to H.F. Lenfest, a significant shareholder and member of the Company's Board of Directors. ETC was not able to secure the Lenfest financing transaction on terms that would allow ETC to comply with the AMEX listing rules._______ Environmental Tectonics Corporation reported that, effective June 1, 2009, the Company's common stock began trading on the Pink Sheets on the Over-the-Counter Market under the symbol "ETCC".____ ETCC is listed on SEC and NYSE but cant find any info when it went back to NYSE after being delisted and trading on OTC. All news reports in Dec 2011 still say it is trading on OTC./Sharon