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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * CHRIST CHARLES F   2. Issuer Name and Ticker or Trading Symbol DOT HILL SYSTEMS CORP [HILL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1351 S. SUNSET STREET 3. Date of Earliest Transaction (Month/Day/Year) 10/06/2015 (Street) LONGMONT, CO 80501 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 10/06/2015   D   278,061 D (1) 0 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		7. Title and Amount of Underlying Securities (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
Director Stock Option (Right to Buy)	$ 4.33	10/06/2015		D			20,000	(2)	05/07/2016	Common Stock	20,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 3.85	10/06/2015		D			20,000	(2)	05/24/2017	Common Stock	20,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 2.7	10/06/2015		D			20,000	(2)	05/08/2018	Common Stock	20,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 0.94	10/06/2015		D			10,000	(2)	06/14/2019	Common Stock	10,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 1.75	10/06/2015		D			10,000	(2)	05/02/2020	Common Stock	10,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 2.95	10/06/2015		D			10,000	(2)	05/01/2021	Common Stock	10,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 1.15	10/06/2015		D			10,000	(2)	05/06/2022	Common Stock	10,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 1.74	10/06/2015		D			10,000	(2)	05/05/2023	Common Stock	10,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 4.03	10/06/2015		D			10,000	(2)	05/04/2024	Common Stock	10,000	(2)	0	D
Director Stock Option (Right to Buy)	$ 6.44	10/06/2015		D			15,000	(3)	05/03/2022	Common Stock	15,000	(3)	0	D
Director Stock Option (Right to Buy)	$ 2.42	10/06/2015		D			50,000	(2)	08/12/2020	Common Stock	50,000	(2)	0	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CHRIST CHARLES F 1351 S. SUNSET STREET LONGMONT, CO 80501	X

Signatures

/s/ Hanif I. Jamal, attorney-in-fact		10/08/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Disposed of pursuant to an Agreement and Plan of Merger (the "Merger Agreement"), dated August 18, 2015, among the Issuer, Seagate HDD Cayman ("Parent"), and Denali Acquisition Sub Corp., a wholly-owned subsidiary of Parent ("Merger Sub"), in exchange for cash consideration of $9.75 per share, without interest, subject to any required withholding of taxes. Pursuant to the Merger Agreement, Merger Sub merged with and into the Issuer, with the Issuer continuing as the surviving corporation (the "Merger").
(2)	This option, which was fully vested on the closing date of the Merger (October 6, 2015), was cancelled in the Merger in exchange for a cash payment equal to $9.75 per share minus the per share exercise price of the option, subject to any applicable tax withholdings.
(3)	This option, which provided for vesting of 100% of the shares subject to the option on May 4, 2016, was cancelled in the Merger in exchange for a cash payment equal to $9.75 per share, minus the per share exercise price of the option, subject to any applicable tax withholdings. In connection with the Merger, vesting of the stock option was accelerated and the option became fully vested and exercisable effective immediately prior to the effective time of the Merger.

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