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 * Brown Elizabeth C   2. Issuer Name and Ticker or Trading Symbol W R GRACE & CO [GRA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP and CHRO (Last) (First) (Middle) C/O W. R. GRACE & CO., 7500 GRACE DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 02/04/2016 (Street) COLUMBIA, MD 21044 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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Employee Stock Options (rights to buy) (1)

$ 75.01

(2)

01/06/2020

Common Stock (3)

7,999

7,999

D

Employee Stock Options (rights to buy) (1)

$ 77.31

(4)

05/07/2020

Common Stock (3)

16,170

16,170

D

Restricted Stock Units (1)

(5)

(6)

(7)

Common Stock (3)

9,702

9,702

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Brown Elizabeth C C/O W. R. GRACE & CO. 7500 GRACE DRIVE COLUMBIA, MD 21044			VP and CHRO

Signatures

/s/ Michael W. Conron, Attorney-in-Fact		02/08/2016
**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)	Adjusted on February 4, 2016 pursuant to Employee Matters Agreement as described in the Remarks below.
(2)	Options become exercisable in two substantially equal annual installments beginning on January 6, 2016 and January 6, 2017.
(3)	Each share of Common Stock also represents one Preferred Stock Purchase Right. Each such Right entitles the holder to purchase preferred stock or other securities or property upon the occurrence of certain events and subject to certain conditions.
(4)	Options become exercisable in three substantially equal annual installments beginning on May 6, 2016; May 5, 2017; and May 7, 2018.
(5)	Each RSU represents a contingent right to receive one share of Grace common stock.
(6)	Restricted stock units vest on May 7, 2018.
(7)	Not Applicable
Remarks: The terms of each of the reporting person's outstanding options and restricted stock unit awards were adjusted pursuant to the Employee Matters Agreement among W. R. Grace & Co. ("Grace"), W. R. Grace & Co.Conn. and GCP Applied Technologies Inc. ("GCP") relating to the February 3, 2016 distribution by Grace to its stockholders of all of the outstanding shares of the common stock of GCP.  All information regarding options and restricted stock unit awards is shown on this Form 4 on a post-adjustment basis.

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