Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 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 ^*

SUBIN NEIL S

2. Date of Event Requiring Statement (MM/DD/YYYY) 1/12/2018

3. Issuer Name and Ticker or Trading Symbol

Gulf Coast Ultra Deep Royalty Trust [GULTU]

(Last) (First) (Middle)

3300 SOUTH DIXIE HIGHWAY, SUITE 1-365

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director ___ X ___ 10% Owner
_____ Officer (give title below) _____ Other (specify below)

(Street)

WEST PALM BEACH, FL 33405

(City) (State) (Zip)

5. 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 Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	1620902 ⁽¹⁾ ⁽²⁾	I	By LIM III - Trust A-4
Common Stock	1620902 ⁽¹⁾ ⁽²⁾	I	By MBM - Trust A-4
Common Stock	262346 ⁽¹⁾ ⁽²⁾	I	By Co-Trustee GST Lloyd A. Crider
Common Stock	184073 ⁽¹⁾ ⁽²⁾	I	By Trustee GST Catherine C. Miller
Common Stock	2354139 ⁽¹⁾ ⁽²⁾	I	By Lloyd I. Miller, III Revocable Trust
Common Stock	231537 ⁽¹⁾ ⁽²⁾	I	By Milfam LLC
Common Stock	262596 ⁽¹⁾ ⁽²⁾	I	By Milfam I L.P.
Common Stock	34972882 ⁽¹⁾ ⁽²⁾	I	By Milfam II L.P.
Common Stock	3718949 ⁽¹⁾ ⁽²⁾	I	By LIMFAM LLC

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:
(1)	Except for possessing voting and dispositive power, the reporting person disclaims any other beneficial ownership of, and specifically any pecuniary interest in, the securities reported herein. This filing is not, and shall not be deemed, an admission (and the reporting person expressly disclaims) that the reporting person is, for purposes of Rule 16a-1(a)(2) under Section 16 of the Securities Exchange Act of 1934, the beneficial owner of any equity securities covered by this filing.
(2)	Mr. Neil Subin has succeeded to the position of President and Manager of MILFAM LLC, which serves as manager, general partner, or investment advisor of a number of entities formerly managed or advised by the late Lloyd I. Miller, III. Mr. Subin also serves as trustee of a number of Miller family trusts. There has been no acquisition transaction by the reporting person with respect to the securities reported herein within the meaning of Section 16 of the Securities Exchange Act.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
SUBIN NEIL S 3300 SOUTH DIXIE HIGHWAY SUITE 1-365 WEST PALM BEACH, FL 33405		X

Signatures
/s/ Paul N. Silverstein Attorney-in-fact		1/22/2018
^** 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 5(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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.