UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
(Amendment No. )

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Filed by a Party other than the Registrant ☐

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☐		Preliminary Proxy Statement
☐		Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐		Definitive Proxy Statement
☒		Definitive Additional Materials
☐		Soliciting Material under Rule 14a-12

Actinium Pharmaceuticals, Inc.

(Name of Registrant as Specified In Its Charter)

N/A

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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EXPLANATORY NOTE

Actinium Pharmaceuticals, Inc. (the “Company”) is providing shareholders with updated information relating to the quorum requirements described on pages 2-3 of the Company’s Proxy Statement filed on November 12, 2015.

Supplemental Information Regarding Quorum

On November 20, 2015, the Board of Directors of the Company amended its bylaws to reduce the quorum required for the Company’s annual meeting of stockholders, from a majority to thirty-four percent (34%) of the voting power of the shares of the Company. Therefore, thirty-four percent of the Company’s outstanding common shares as of the record date must be present at the annual meeting (in person or represented by proxy) in order to transact business.

This supplement should be considered in conjunction with the Proxy Statement.