Savara (SVRA) Form 3 Mast Therapeutics / Shana Hood ownership change

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Hood Shana

(Last) (First) (Middle)

3611 VALLEY CENTRE DRIVE, SUITE 500

(Street)

SAN DIEGO CA 92130

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/19/2016

3. Issuer Name and Ticker or Trading Symbol
Mast Therapeutics, Inc. [ MSTX ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
General Counsel & VP

5. If Amendment, Date of 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

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)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (Right to Buy)	(1)	01/04/2026	Common Stock	409,000	0.42	D
Employee Stock Option (Right to Buy)	(2)	06/11/2025	Common Stock	215,800	0.5	D
Employee Stock Option (Right to Buy)	(3)	01/02/2025	Common Stock	176,500	0.58	D
Employee Stock Option (Right to Buy)	(4)	06/19/2024	Common Stock	93,650	0.65	D
Employee Stock Option (Right to Buy)	(5)	01/02/2024	Common Stock	25,600	0.47	D
Employee Stock Option (Right to Buy)	(6)	06/19/2023	Common Stock	95,500	0.5	D
Employee Stock Option (Right to Buy)	(7)	01/02/2023	Common Stock	22,400	0.59	D
Employee Stock Option (Right to Buy)	(8)	12/07/2021	Common Stock	37,450	0.6	D
Employee Stock Option (Right to Buy)	(9)	02/01/2021	Common Stock	27,069	2.29	D
Employee Stock Option (Right to Buy)	(10)	03/16/2020	Common Stock	11,250	5.91	D

Explanation of Responses:

1. This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of January 4, 2016, subject to the reporting person's continued service with the issuer.

2. This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of June 11, 2015, subject to the reporting person's continued service with the issuer.

3. This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of January 2, 2015, subject to the reporting person's continued service with the issuer.

4. This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of June 19, 2014, subject to the reporting person's continued service with the issuer.

5. This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of January 2, 2014, subject to the reporting person's continued service with the issuer.

6. This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of June 19, 2013, subject to the reporting person's continued service with the issuer.

7. This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of January 2, 2013, subject to the reporting person's continued service with the issuer.

8. This option vested and became exercisable in 48 substantially equal monthly installments. The first installment vested and became exercisable on January 8, 2012 and the final installment on December 8, 2015.

9. This option vested and became exercisable as to one-fourth of the underlying shares on January 1, 2012, and thereafter in 36 substantially equal monthly installments such that it became fully vested and exercisable on January 1, 2015.

10. This option vested and became exercisable as to one-fourth of the underlying shares on February 16, 2011, and thereafter in 36 substantially equal monthly installments such that it became fully vested and exercisable on February 16, 2014.

Remarks:

	/s/ Shana Hood	01/22/2016
	** 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 Number.