Corporate Governance | Regeneron Pharmaceuticals Inc.

Date	Name	Title	Filing	Type	Shares Traded	Price	Total Held
Feb 14, 2012	SCHLEIFER LEONARD S Director, President & CEO	Director, President & CEO	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	95,429	$111.01	267,775
Feb 14, 2012	SCHLEIFER LEONARD S Director, President & CEO	Director, President & CEO	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	43,757	$111.01	474,018
Feb 14, 2012	SCHLEIFER LEONARD S Director, President & CEO	Director, President & CEO	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	95,016	$111.01	379,002
Feb 14, 2012	SCHLEIFER LEONARD S Director, President & CEO	Director, President & CEO	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	1,801	$111.01	392,585
Dec 16, 2011	SCHLEIFER LEONARD S Director, President & CEO	Director, President & CEO	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	134,585	$52.03	209,407
Dec 16, 2011	SCHLEIFER LEONARD S Director, President & CEO	Director, President & CEO	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	53,344	$52.03	156,063
Dec 15, 2009	SCHLEIFER LEONARD S Director, CEO and President, Ten Percent Owner	Director, CEO and President, Ten Percent Owner	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	66,138	$19.89	215,920
Dec 15, 2009	SCHLEIFER LEONARD S Director, CEO and President, Ten Percent Owner	Director, CEO and President, Ten Percent Owner	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	37,155	$19.89	178,765
Sep 29, 2008	SCHLEIFER LEONARD S Director, Chief Exec Officer & President, Ten Percent Owner	Director, Chief Exec Officer & President, Ten Percent Owner	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	23,238	$23.28	121,482
Sep 29, 2008	SCHLEIFER LEONARD S Director, Chief Exec Officer & President, Ten Percent Owner	Director, Chief Exec Officer & President, Ten Percent Owner	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	21,035	$23.28	100,447

* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.

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