Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* KIRK RANDAL J	2. Issuer Name and Ticker or Trading Symbol INTREXON CORP [ XON ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __ X __ Director __ X __ 10% Owner __ X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer
(Last) (First) (Middle) C/O THIRD SECURITY, LLC, 1881 GROVE AVENUE	3. Date of Earliest Transaction (MM/DD/YYYY) 5/22/2019
(Street) RADFORD, VA 24141 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	5/22/2019		P		46075 ⁽¹⁾	A	$4.70 ⁽¹⁾	596649	I	by Sr. Staff 2015 ⁽²⁾
Common Stock	5/23/2019		P		34300 ⁽¹⁾	A	$4.67 ⁽¹⁾	630949	I	by Sr. Staff 2015 ⁽²⁾
Common Stock	5/24/2019		P		28972 ⁽¹⁾	A	$4.68 ⁽¹⁾	659921	I	by Sr. Staff 2015 ⁽²⁾
Common Stock	5/22/2019		P		46075 ⁽¹⁾	A	$4.70 ⁽¹⁾	596649	I	by Staff 2015 ⁽²⁾
Common Stock	5/23/2019		P		34300 ⁽¹⁾	A	$4.67 ⁽¹⁾	630949	I	by Staff 2015 ⁽²⁾
Common Stock	5/24/2019		P		28972 ⁽¹⁾	A	$4.68 ⁽¹⁾	659921	I	by Staff 2015 ⁽²⁾
Common Stock	5/22/2019		P		23037 ⁽¹⁾	A	$4.70 ⁽¹⁾	953541	I	by Incentive 2010 ⁽²⁾
Common Stock	5/23/2019		P		17150 ⁽¹⁾	A	$4.67 ⁽¹⁾	970691	I	by Incentive 2010 ⁽²⁾
Common Stock	5/24/2019		P		14486 ⁽¹⁾	A	$4.68 ⁽¹⁾	985177	I	by Incentive 2010 ⁽²⁾
Common Stock								2091141	I	by Third ⁽²⁾
Common Stock								14140139	I	by KJ ⁽²⁾
Common Stock								8325000	I	by TSCP V ⁽²⁾
Common Stock								311287	I	by Staff 2001 ⁽²⁾
Common Stock								1403	I	by Lotus ⁽²⁾
Common Stock								19711	I	by Inc 2006 ⁽²⁾
Common Stock								118266	I	by Sr Staff 2006 ⁽²⁾
Common Stock								59133	I	by Staff 2006 ⁽²⁾
Common Stock								5483957	I	by MK ⁽²⁾
Common Stock								58800	I	by Sr Staff ⁽²⁾
Common Stock								213805	I	by ADC 2010 ⁽²⁾
Common Stock								1356648	I	by Sr Staff 2008 ⁽²⁾
Common Stock								1356648	I	by Staff 2010 ⁽²⁾
Common Stock								13340645	I	by VI Holdings ⁽²⁾
Common Stock								243001	I	by VII Holdings ⁽²⁾

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:
(1)	Third Security Senior Staff 2015 LLC ("Sr. Staff 2015"), Third Security Staff 2015 LLC ("Staff 2015"), Third Security Incentive 2010 LLC ("Incentive 2010") purchased shares at the same price per share.
(2)	Mr. Kirk controls each of Sr. Staff 2015, Staff 2015, Incentive 2010, Third Security, LLC ("Third"), Kapital Joe, LLC ("KJ"), Third Security Capital Partners V, LLC ("TSCP V"), Third Security Staff 2001 LLC ("Staff 2001"), Lotus Capital (2000) Company Inc. ("Lotus"), Third Security Incentive 2006 LLC ("Inc 2006"), Third Security Senior Staff 2006 LLC ("Sr Staff 2006"), Third Security Staff 2006 LLC ("Staff 2006"), Mascara Kaboom, LLC ("MK "), Third Security Senior Staff LLC ("Sr Staff"), ADC 2010, LLC ("ADC 2010"), Third Security Senior Staff 2008 LLC ("Sr Staff 2008"), Third Security Staff 2010 LLC ("Staff 2010"), NRM VI Holdings I, LLC ("VI Holdings") and NRM VII Holdings I, LLC ("VII Holdings"). Shares held by these entities may be deemed to be 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.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
KIRK RANDAL J C/O THIRD SECURITY, LLC 1881 GROVE AVENUE RADFORD, VA 24141	X	X	Chief Executive Officer

Signatures
/s/ Randal J. Kirk		5/24/2019
^** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
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