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 * Maxwell (Mauritius) Pte Ltd   2. Issuer Name and Ticker or Trading Symbol PORTOLA PHARMACEUTICALS INC [PTLA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CIM CORPORATE SERVICES LTD.,, LES CASCADES, EDITH CAVELL ST. 3. Date of Earliest Transaction (Month/Day/Year) 06/01/2017 (Street) PORT LOUIS, O4  4. If Amendment, Date 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 (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 06/01/2017   S   1,700,000 D $ 34.4 4,133,568 D (1)

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Maxwell (Mauritius) Pte Ltd C/O CIM CORPORATE SERVICES LTD., LES CASCADES, EDITH CAVELL ST. PORT LOUIS, O4		X
Cairnhill Investments (Mauritius) Pte Ltd C/O CIM CORPORATE SERVICES LTD., LES CASCADES, EDITH CAVELL ST. PORT LOUIS, O4		X
Fullerton Management Pte Ltd 60B ORCHARD ROAD #06-18, TOWER 2 THE ATRIUM@ORCHARD SINGAPORE, U0 238891		X
Temasek Holdings (Private) Ltd 60B ORCHARD ROAD #06-18, TOWER 2 THE ATRIUM@ORCHARD SINGAPORE, U0 238891		X

Signatures

By: /s/ Rooksana Shahabally, Director, Maxwell (Mauritius) Pte Ltd		06/05/2017
**Signature of Reporting Person		Date
By: /s/ Rooksana Shahabally, Director, Cairnhill Investments (Mauritius) Pte Ltd		06/05/2017
**Signature of Reporting Person		Date
By: /s/ Cheong Kok Tim, Director, Fullerton Management Pte Ltd		06/05/2017
**Signature of Reporting Person		Date
By: /s/ Christina Choo, Authorized Signatory, Temasek Holdings (Private) Limited		06/05/2017
**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)	Maxwell (Mauritius) Pte Ltd ("Maxwell") owns 4,133,568 shares of the Issuer's common stock ("Shares") and V-Sciences Investments Pte Ltd ("V-Sciences") owns 750,000 Shares. Maxwell is wholly owned by Cairnhill Investments (Mauritius) Pte Ltd, which is wholly owned by Fullerton Management Pte Ltd ("FMPL"). V-Sciences is wholly owned by Temasek Life Sciences Private Limited, which is wholly owned by FMPL. FMPL is wholly owned by Temasek Holdings (Private) Limited. Accordingly, each of FMPL and Temasek Holdings (Private) Limited, through the ownership described herein, may be deemed to beneficially own the 4,883,568 Shares owned by Maxwell and V-Sciences, collectively.

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