Thursday, November 15, 2007

Planktos (PLKT.OB) Will Not File Financial Report on Time

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 12b-25

NOTIFICATION OF LATE FILING



Planktos Corp.

(Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized.

Date: November 14, 2007

By: /s/ Russ George

Russ George, Chief Executive Officer

ATTENTION: Intentional misstatements or omissions of fact constitute

Federal criminal violations (see18 U.S.C. 1001).