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

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3235-0287

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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 * ONEIL JAMES F	2. Issuer Name and Ticker or Trading Symbol NRC GROUP HOLDINGS CORP. [ NRCG ]	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) C/O NRC GROUP HOLDINGS CORP., 952 ECHO LANE, SUITE 460	3. Date of Earliest Transaction (MM/DD/YYYY) 11/1/2019
(Street) HOUSTON, TX 77024 (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	11/1/2019		D		168930 (1)	D	(1)	0	D

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
Non-Qualified Stock Option (Right to Buy)	$10.25	11/1/2019		D		25000 (2)		(2)	4/5/2029	Common Stock	25000	(2)	0	D

Explanation of Responses:
(1)	Pursuant to the merger agreement between NRC Group Holdings Corp. (the "Issuer"), US Ecology, Inc., US Ecology Parent, Inc. ("Holdco"), Rooster Merger Sub, Inc. and ECOL Merger Sub, Inc. (the "Merger Agreement"), each share of the Issuer's common stock issued and outstanding immediately prior to the effective time of the mergers (the "Effective Time") was converted into the right to receive, and became exchangeable for, (1) 0.196 of a share of Holdco common stock for each share of the Issuer's common stock and (2) any cash in lieu of fractional shares of Holdco common stock. The Holdco common stock had a market value of approximately $62.23 per share at the close of market immediately prior to the Effective Time.
(2)	This option, which provided for vesting in three substantially equal annual installments beginning October 17, 2019, was assumed by Holdco in the merger and replaced with an option to purchase 4,900 shares of Holdco common stock at an exercise price of $52.30 per share in accordance with the terms of the Merger Agreement. This option was subject to accelerated vesting and became immediately vested and exercisable at the Effective Time.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ONEIL JAMES F C/O NRC GROUP HOLDINGS CORP. 952 ECHO LANE, SUITE 460 HOUSTON, TX 77024	X

Signatures
/s/ James F. O'Neil, III		11/1/2019
**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).
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.

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