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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
894158	Synthetic Biologics Inc.	SYN	Pharmaceutical Preparations (2834)	133808303

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1091823	J Randal Kirk	C/O Third Security, Llc 1881 Grove Avenue Radford VA 24141		No	No	Yes	No
1356090	Intrexon Corp	C/O Legal Department 20358 Seneca Meadows Parkway Germantown MD 20876		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-10-29	3,125,000	$1.60	3,125,000	No	4	P	Indirect	by NRM VII Holdings

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	by NRM VII Holdings

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	6,675,768	Indirect	by Intrexon

Footnotes

Randal J. Kirk controls NRM VII Holdings I, LLC ("NRM VII Holdings"). Shares held by this entity may be deemed to be indirectly beneficially owned (as defined under Rule 13d-3 promulgated under the Securities Exchange Act of 1934, as amended) by Mr. Kirk. Mr. Kirk disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
Randal J. Kirk, directly and through certain affiliates, has voting and dispositive power over a majority of the outstanding capital stock of Intrexon Corporation ("Intrexon"). Mr. Kirk may therefore be deemed to have voting and dispositive power over the shares of the issuer owned by Intrexon. Shares held by Intrexon may be deemed to be indirectly beneficially owned (as defined under Rule 13d-3 promulgated under the Securities Exchange Act of 1934, as amended) by Mr. Kirk. Mr. Kirk disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.