SEC Form 4

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

1. Name and Address of Reporting Person* BR Dialectic Capital Management, LLC (Last) (First) (Middle) 119 ROWAYTON AVENUE, 2ND FLOOR (Street) NORWALK, CT 06853 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol QUANTUM CORP /DE/ [ QMCO ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 12/03/2019
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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. 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	12/03/2019		S		969,900	D	$5.25	0	I	Held by Dialectic Antithesis Partners, LP(1)(2)(3)

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 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: 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

1. Name and Address of Reporting Person* BR Dialectic Capital Management, LLC (Last) (First) (Middle) 119 ROWAYTON AVENUE, 2ND FLOOR (Street) NORWALK, CT 06853 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Dialectic Antithesis Partners, LP (Last) (First) (Middle) 119 ROWAYTON AVENUE, 2ND FLOOR (Street) NORWALK, CT 06853 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. In addition to BR Dialectic Capital Management, LLC, a Delaware limited liability company ("BR Dialectic"), this Form 4 is being filed jointly by Dialectic Antithesis Partners, LP, a Delaware limited partnership ("Dialectic" and collectively, the "Filing Persons").

2. BR Dialectic is the general partner and investment manager of Dialectic. As a result, BR Dialectic may be deemed to indirectly beneficially own the securities held by Dialectic. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of Common Stock ("Common Stock") of Quantum Corporation, a Delaware corporation (the "Issuer"), reported herein except to the extent of its pecuniary interest therein.

3. On December 3, 2019, B. Riley Financial, Inc. ("BRF") purchased 969,900 shares of Common Stock from Dialectic at a purchase price of $5.25 per share. BRF previously reported that it may have been deemed to indirectly beneficially own the 969,900 shares of Common Stock that were previously held by Dialectic. As a result of the sale, the Filing Persons do not own any shares of Common Stock and are no longer subject to Section 16 of the Exchange Act of 1934.

	BR Dialectic Capital Management, LLC, by B. Riley Capital Management, LLC, its sole member, by: /s/ Bryant R. Riley, Chief Executive Officer	12/05/2019
	Dialectic Antithesis Partners, LP, by: /s/ John Fichthorn, Portfolio Manager	12/05/2019
	** 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).
** 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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