Statement of Changes in Beneficial Ownership (4)

FORM 4 [ X ] 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 * Haddock John Robert	2. Issuer Name and Ticker or Trading Symbol FIRST SECURITY GROUP INC/TN [ FSGI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                      _____ 10% Owner __ X __ Officer (give title below)      _____ Other (specify below) EVP and CFO
(Last)          (First)          (Middle) 531 BROAD STREET	3. Date of Earliest Transaction (MM/DD/YYYY) 10/31/2015
(Street) CHATTANOOGA, TN 37402 (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)
			Code	V	Amount	(A) or (D)	Price
Common Stock   (1)	10/31/2015		D		228350	D	(2)	0	D
Common Stock   (1)	10/31/2015		D		10000	D	(2)	0	I	By 401(k)

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options - Right to Buy   (1) (3)	$95.00	10/31/2015		D			200	(4)	12/21/2015	Common Stock	200	(4)	0	D
Stock Options - Right to Buy   (1) (3)	$113.50	10/31/2015		D			500	(5)	12/27/2016	Common Stock	500	(5)	0	D
Stock Options - Right to Buy   (1) (3)	$90.80	10/31/2015		D			105	(6)	2/27/2018	Common Stock	105	(6)	0	D
Stock Options - Right to Buy   (1) (3)	$2.33	10/31/2015		D			420000	(7)	7/24/2023	Common Stock	400000	(7)	0	D

Explanation of Responses:
( 1)	Disposed of pursuant to the Agreement and Plan of Merger, dated March 25, 2015, by and between Atlantic Capital Bancshares, Inc. ("Atlantic Capital") and First Security Group, Inc. ("First Security") (as amended on June 8, 2015, the "Merger Agreement"), on October 31, 2015 (the "Effective Date"), First Security merged with and into Atlantic Capital (the "Merger"), with Atlantic Capital continuing as the surviving corporation. As a result of the Merger, the reporting person no longer beneficially owns directly or indirectly any shares of First Security common stock or stock options.
( 2)	Pursuant to the Merger Agreement, on the Effective Date, each outstanding share of First Security's common stock was converted into the right to receive either (a) stock consideration of 0.188 shares (the "Exchange Ratio") of Atlantic Capital common stock or (b) cash consideration of $2.35 per share (together with cash in lieu of fractional shares, the "Merger Consideration"). Restricted shares of First Security common stock outstanding on the Effective Date became fully-vested and were converted into the right to receive the Merger Consideration.
( 3)	Pursuant to the Merger Agreement, on the Effective Date, all outstanding options and other stock-based awards of First Security issued and outstanding immediately prior to the Effective Date were assumed by Atlantic Capital or substituted for substantially identical options or other awards under Atlantic Capital's equity incentive compensation plans.
( 4)	This option, which provided for vesting in three equal installments beginning on December 21, 2006, was assumed by Atlantic Capital in the Merger and substituted with an option to purchase 38 shares of Atlantic Capital common stock for $505.32 per share.
( 5)	This option, which provided for vesting in three equal installments beginning on December 27, 2007, was assumed by Atlantic Capital in the Merger and substituted with an option to purchase 94 shares of Atlantic Capital common stock for $482.98 per share.
( 6)	This option, which provided for vesting in three equal installments beginning on February 27, 2009, was assumed by Atlantic Capital in the Merger and substituted with an option to purchase 20 shares of Atlantic Capital common stock for $482.98 per share.
( 7)	This option, which provided for vesting in five equal installments beginning on July 24, 2014, was assumed by Atlantic Capital in the Merger and substituted with an option to purchase 78,960 shares of Atlantic Capital common stock for $12.39 per share.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Haddock John Robert 531 BROAD STREET CHATTANOOGA, TN 37402			EVP and CFO

Signatures
/s/ John R. Haddock		11/2/2015
** 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).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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