Nea 12 GP Form 4 PROTEOSTASIS THERAPEUTICS / SCOTT D SANDELL ownership change

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

New Enterprise Associates 12, Limited Partnership

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
PROTEOSTASIS THERAPEUTICS, INC. [ PTI ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/17/2016

4. If Amendment, Date of 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

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	02/17/2016		C		2,192,748(1)	A	(1)	2,192,748	D(2)
Common Stock	02/17/2016		P		900,324(3)	A	$8	3,093,072	D(2)

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 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: 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
Series A Convertible Redeemable Preferred Stock	(4)	02/17/2016		C			13,848,000	(4)	(4)	Common Stock	1,783,531(5)	$0.00	0	D(2)
Series B Convertible Redeemable Preferred Stock	(4)	02/17/2016		C			4,423,723	(4)	(4)	Common Stock	409,217	$0.00	0	D(2)

1. Name and Address of Reporting Person^*

New Enterprise Associates 12, Limited Partnership

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

NEA Partners 12, Limited Partnership

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

NEA 12 GP, LLC

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

BARRIS PETER J

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

BASKETT FOREST

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

KERINS PATRICK J

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

KOLLURI KRISHNA KITTU

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

SANDELL SCOTT D

(Last) (First) (Middle)

1954 GREENSPRING DRIVE

SUITE 600

(Street)

TIMONIUM MD 21093

(City) (State) (Zip)

Explanation of Responses:

1. This transaction represents the total number of shares of Common Stock of the Issuer (the "Issuer Common Stock") received upon the conversion of the Issuer's Series A Convertible Redeemable Preferred Stock (the "Series A Shares"), the payment of accrued dividends on the Series A Shares and the conversion of the Issuer's Series B Convertible Redeemable Preferred Stock ( collectively, the "Preferred Shares").

2. The shares are directly held by New Enterprise Associates 12, Limited Partnership ("NEA 12") and indirectly held by NEA Partners 12, Limited Partnership ("NEA Partners 12"), the sole general partner of NEA 12, NEA 12 GP, LLC ("NEA 12 GP"), the sole general partner of NEA Partners 12, and the individual managers of NEA 12 GP (NEA Partners 12, NEA 12 GP and the individual managers of NEA 12 GP together, the "NEA 12 Indirect Reporting Persons"). The individual managers of NEA 12 GP are M. James Barrett, Peter J. Barris, Forest Baskett, Patrick J. Kerins, Krishna "Kittu" Kolluri, and Scott D. Sandell. The NEA 12 Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 12 shares in which the NEA 12 Indirect Reporting Persons have no pecuniary interest.

3. These securities were purchased in the initial public offering of the Issuer.

4. The Preferred Shares automatically converted into Issuer Common Stock on a 10.8102-to-1 basis upon the closing of the initial public offering of the Issuer without payment or further consideration. The Preferred Shares were convertible at any time at the election of the Reporting Person and had no expiration date.

5. These securities include shares of Issuer Common Stock received as payment for accrued dividends on the Series A Shares.

Remarks:

	/s/ Sasha Keough, attorney-in-fact	02/17/2016
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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