Sec Form 13D Filing - NEW ENTERPRISE ASSOCIATES 13 LP @ TESARO Inc.

Insider filing report for Changes in Beneficial Ownership

Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.

"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)*

TESARO, Inc.

(Name of Issuer)

Common Stock, $.0001 par value

(Title of Class of Securities)

881569107

(CUSIP Number)

Louis S. Citron, Esq.

New Enterprise Associates

1954 Greenspring Drive, Suite 600, Timonium, MD 21093

(410) 842-4000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

March 2, 2018

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. ☐

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 881569107

13D

Page 2 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	New Enterprise Associates 13, L.P.

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	WC

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

CUSIP No. 881569107

13D

Page 3 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	NEA 15 Opportunity Fund, L.P.

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	WC

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

CUSIP No. 881569107

13D

Page 4 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	NEA Partners 13, L.P.

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

CUSIP No. 881569107

13D

Page 5 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	NEA Partners 15-OF, L.P.

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

CUSIP No. 881569107

13D

Page 6 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	NEA 13 GP, LTD

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	OO

CUSIP No. 881569107

13D

Page 7 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	NEA 15 GP, LLC

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	CO

CUSIP No. 881569107

13D

Page 8 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Michael James Barrett

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States citizen

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			504 shares

		8	SHARED VOTING POWER	&# xA0;
			9,681,038 shares

		9	SOLE DISPOSITIVE POWER
			504 shares

		10	SHARED DISPOSITIVE POWER
			9,681,038 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	9,681,542 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	17.7%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

CUSIP No. 881569107

13D

Page 9 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Peter J. Barris

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States citizen

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			1,534 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			1,534 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,422,089 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

CUSIP No. 881569107

13D

Page 10 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Forest Baskett

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States citizen

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

CUSIP No. 881569107

13D

Page 11 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Patrick J. Kerins

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States citizen

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			1,333 shares

		8	SHARED VOTING POWER
			9,681,038 shares

		9	SOLE DISPOSITIVE POWER
			1,333 shares

		10	SHARED DISPOSITIVE POWER
			9,681,038 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	9,682,371 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	17.7%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

CUSIP No. 881569107

13D

Page 12 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	David M. Mott

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States citizen

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			56,158 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			56,158 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,476,713 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.2%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

CUSIP No. 881569107

13D

Page 13 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Scott D. Sandell

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States citizen

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

CUSIP No. 881569107

13D

Page 14 of 26 Pages

1	NAMES OF REPORTING PERSONS
	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Ravi Viswanathan				&# xA0;

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☐

3	SEC USE ONLY


4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF

5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐


6	CITIZENSHIP OR PLACE OF ORGANIZATION
	United States citizen

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0 shares

		8	SHARED VOTING POWER
			10,420,555 shares

		9	SOLE DISPOSITIVE POWER
			0 shares

		10	SHARED DISPOSITIVE POWER
			10,420,555 shares

11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,420,555 shares

12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐


13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	19.1%

14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

CUSIP No. 881569107

13D

Page 15 of 26 Pages

Schedule 13D

Item 1.

Security and Issuer.

This Amendment No. 3 ("Amendment No. 3") to Schedule 13D amends and restates the statement on Schedule 13D originally filed on July 10, 2012, Amendment No. 1 thereto filed on June 10, 2015 and Amendment No. 2 thereto filed on March 28, 2016, relating to the common stock, $.0001 par value (the "Common Stock") of TESARO, Inc. (the "Issuer") having its principal executive office at 1000 Winter Street, Waltham, MA 02451.

Certain terms used but not defined in this Amendment No. 3 have the meanings assigned thereto in the Schedule 13D (including Amendment No. 1 and Amendment No. 2 thereto). Except as specifically provided herein, this Amendment No. 3 does not modify any of the information previously reported on the Schedule 13D (including Amendment No. 1 and Amendment No. 2 thereto).

Item 2.

Identity and Background.

This statement is being filed by:

(a) New Enterprise Associates 13, L.P. ("NEA 13") and NEA 15 Opportunity Fund, L.P. ("NEA 15-OF" and, together with NEA 13, the "Funds");

(b) NEA Partners 13, L.P. ("NEA Partners 13"), which is the sole general partner of NEA 13; NEA Partners 15-OF, L.P. ("NEA Partners 15-OF" and, together with NEA Partners 13, the "GPLPs"), which is the sole general partner of NEA 15-OF; NEA 13 GP, LTD ("NEA 13 LTD"), which is the sole general partner of NEA Partners 13, NEA 15 GP, LLC ("NEA 15 LLC" and, collectively with the GPLPs and NEA 13 LTD, the "Control Entities"), which is the sole general partner of NEA Partners 15-OF; and

(c) Michael James Barrett ("Barrett"), Peter J. Barris ("Barris"), Forest Baskett ("Baskett"), Patrick J. Kerins ("Kerins"), David D. Mott ("Mott"), Scott D. Sandell ("Sandell"), Ravi Viswanathan ("Viswanathan") (collectively, the "Directors"), Krishna S. Kolluri ("Kolluri") and Harry R. Weller ("Weller").

Barris, Baskett, Mott, Sandell and Viswanathan (the "Dual Directors") are directors of NEA 13 LTD and managers of NEA 15 LLC. Barrett and Kerins are directors of NEA 13 LTD (the "NEA 13 Directors").

The persons named in this Item 2 are referred to individually herein as a "Reporting Person" and collectively as the "Reporting Persons."

The address of the principal business office of the Funds and each Control Entity is New Enterprise Associates, 1954 Greenspring Drive, Suite 600, Timonium, MD 21093. The address of the principal business office of each of Barrett, Barris, Kerins and Mott is New Enterprise Associates, 5425 Wisconsin Avenue, Suite 800, Chevy Chase, MD 20815. The address of the principal business office of Baskett, Sandell and Viswanathan is New Enterprise Associates, 2855 Sand Hill Road, Menlo Park, California 94025.

The principal business of the Funds is to invest in and assist growth-oriented businesses located principally in the United States. The principal business of NEA Partners 13 is to act as the sole general partner of NEA 13. The principal business of NEA Partners 15-OF is to act as the sole general partner of NEA 15-OF. The principal business of NEA 13 LTD is to act as the sole general partner of NEA Partners 13. The principal business of NEA 15 LLC is to act as the sole general partner of NEA Partners 15-OF. The principal business of each of the Dual Directors is to manage the Control Entities, the Funds and a number of affiliated partnerships with similar businesses. The principal business of each of the NEA 13 Directors is to manage NEA 13 LTD, NEA Partners 13, NEA 13 and a number of affiliated partnerships with similar businesses.

During the five years prior to the date hereof, none of the Reporting Persons has been convicted in a criminal proceeding or has been a party to a civil proceeding ending in a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

NEA 13 and the NEA Partners 13 are exempt limited partnerships organized under the laws of the Cayman Islands. NEA 13 LTD is an exempted company organized under the laws of the Cayman Islands. NEA 15-OF and NEA Partners 15-OF are limited partnerships organized under the laws of the State of Delaware. NEA 15 LLC is a limited liability company organized under the laws of the State of Delaware. Each of the Directors is a United States citizen.

CUSIP No. 881569107

13D

Page 16 of 26 Pages

Item 3.

Source and Amount of Funds or Other Consideration.

From March 2, 2018 to March 6, 2018, the Funds entered into a series of public transactions pursuant to which (i) NEA 13 acquired 116,354 shares of the Issuer's Common Stock (the "New NEA 13 Shares") and (ii) NEA 15-OF acquired 29,088 shares of the Issuer's Common Stock (the "New NEA 15-OF Shares" and, together with the New NEA 13 Shares, the "Securities") for an aggregate purchase price of $8,351,853.51. Prior to acquiring the Securities, the Funds held a total of 10,275,113 shares of the Issuer's Common Stock, which included the 9,564,684 shares of the Issuer's Common Stock owned by NEA 13 (the "Prior NEA 13 Shares" and, together with the New NEA 13 Shares, t he "NEA 13 Shares") and the 710,429 shares of the Issuer's Common Stock owned by NEA 15-OF (the "Prior NEA 15-OF Shares" and, together with the New NEA 15-OF Shares, the "NEA 15-OF Shares"). Collectively, the Funds now hold a total of 10,420,555 shares of the Issuer's Common Stock (the "Firm Shares").

The working capital of NEA 13 was the source of the funds for the purchase of the NEA 13 Shares. The working capital of NEA 15-OF was the source of the funds for the purchase of the NEA 15-OF Shares. No part of the purchase price of the Securities was represented by funds or other consideration borrowed or otherwise obtained for the purpose of acquiring, holding, trading or voting the Securities.

Item 4.

Purpose of Transaction.

The Funds acquired the Securities for investment purposes. Depending on market conditions, its continuing evaluation of the business and prospects of the Issuer and other factors, the Funds and other Reporting Persons may dispose of or acquire additional shares of the Issuer. Except as set forth above, none of the Reporting Persons has any present plans which relate to or would result in:

(a)

The acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer;

(b)

An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries;

(c)

A sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries;

(d)

Any change in the present board of directors or management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the board;

(e)

Any material change in the present capitalization or dividend policy of the Issuer;

(f)

Any other material change in the Issuer's business or corporate structure;

(g)

Changes in the Issuer's charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person;

(h)

Causing a class of securities of the Issuer to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association;

(i)

A class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Securities Exchange Act of 1934; or

(j)

Any action similar to any of those enumerated above.

CUSIP No. 881569107

13D

Page 17 of 26 Pages

Item 5.

Interest in Securities of the Issuer.

(a)

NEA 13 is the record owner of the NEA 13 Shares. As the sole general partner of NEA 13, NEA Partners 13 may be deemed to own beneficially the NEA 13 Shares. As the sole general partner of NEA Partners 13, NEA 13 LTD may be deemed to own beneficially the NEA 13 Shares. NEA 15-OF is the record owner of the NEA 15-OF Shares. As the sole general partner of NEA 15-OF, NEA Partners 15-OF may be deemed to own beneficially the NEA 15-OF Shares. As the sole general partner of NEA Partners 15-OF, NEA 15 GP LLC may be deemed to own beneficially the NEA 15-OF Shares.

By virtue of their relationship as affiliated entities, whose Control Entities have overlapping individual controlling persons, each of the Funds may be deemed to share the power to direct the disposition and vote of the Firm Shares. As general partners of the Funds, each of the GPLPs may also be deemed to own beneficially the Firm Shares. As the sole general partner of NEA Partners 13, NEA 13 LTD may also be deemed to own beneficially the Firm Shares. As the sole general partner of NEA Partners 15-OF, NEA 15 LLC may also be deemed to own beneficially the Firm Shares.

As individual directors and/or managers of NEA 13 LTD and NEA 15 LLC, each of the Dual Directors may be deemed to own beneficially all of the Firm Shares. As directors of NEA 13 LTD, each of the NEA 13 Directors may be deemed to own beneficially the NEA 13 Shares.

As of March 6, 2018, Barrett is the record owner of 252 shares of Common Stock (the "Barrett Shares") and the Barrett 2006 Family Trust (the "Barrett Trust") is the record owner of 252 shares of Common Stock (the "Barrett Trust Shares"). As an affiliate of the Barrett Trust, Barrett may be deemed to own beneficially the Barrett Trust Shares in addition to the Barrett Shares and the NEA 13 Shares.

As of March 6, 2018, PJ Barris, LLC is the record owner of 767 shares of Common Stock (the "PJ Barris Shares") and PDB II LLC is the record owner of 767 shares of Common Stock (the "PDB Shares"). As a member of PJ Barris, LLC and the investment advisor of PDB, LLC, Barris may be deemed to own beneficially the PJ Barris Shares and the PDB Shares in addition to the Firm Shares.

As of March 6, 2018, Kerins is the record owner of 1,333 shares of Common Stock (the "Kerins Shares"). Accordingly, Kerins may be deemed to own beneficially the Kerins Shares and the NEA 13 Shares.

As of March 6, 2018, Mott is the record owner of 12,825 shares of Common Stock (the "Mott Shares") as well as options to purchase 42,000 shares of Common Stock (the "Mott Option Shares"), exercisable within 60 days, and The David Mott Declaration of Trust dated May 31, 2001 (the "Mott Trust") is the record owner of 1,333 shares of Common Stock (the "Mott Trust Shares"). As an affiliate of the Mott Trust, Mott may be deemed to own beneficially the Mott Trust Shares in addition to the Mott Shares, the Mott Option Shares and the Firm Shares.

Each Reporting Person disclaims beneficial ownership of the Firm Shares, as applicable, other than those shares which such person owns of record.

The percentage of outstanding Common Stock of the Issuer which may be deemed to be beneficially owned by su ch Reporting Person is set forth on Line 13 of such Reporting Person's cover sheet. Such percentage was calculated, for each Reporting Person other than Mott, based on the 54,563,915 shares of Common Stock (the "10-K Shares") reported to be outstanding as of February 22, 2018 on the Issuer's Form 10-K filed with the Securities Exchange Commission on February 28, 2018. The percentage set forth on the cover sheet for Mott is calculated based on 54,605,915 shares of Common Stock, which includes the 10-K Shares and the Mott Option Shares.

CUSIP No. 881569107

13D

Page 18 of 26 Pages

(b)

Regarding the number of shares as to which such person has:

(i)

sole power to vote or to direct the vote: See line 7 of cover sheets

(ii)

shared power to vote or to direct the vote: See line 8 of cover sheets

(iii)

sole power to dispose or to direct the disposition: See line 9 of cover sheets

(iv)

shared power to dispose or to direct the disposition: See line 10 of cover sheets

(c)

Except as set forth in Item 3 above, none of the Reporting Persons has effected any transaction in the Common Stock during the last 60 days.

(d)

No other person is known to have the right to receive or the power to direct the receipt of dividends from, or any proceeds from the sale of, Shares beneficially owned by any of the Reporting Persons.

(e)

Not applicable.

Item 7.

Material to be Filed as Exhibits.

Exhibit 1 – Agreement regarding filing of joint Schedule 13D.

Exhibit 2 – Power of Attorney regarding filings under the Securities Exchange Act of 1934, as amended.

CUSIP No. 881569107

13D

Page 19 of 26 Pages

SIGNATURE

After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

EXECUTED this 9^th day of March, 2018.

NEW ENTERPRISE ASSOCIATES 13, L.P.

By:	NEA PARTNERS 13, L.P. General Partner

By:

NEA 13 GP, LTD
General Partner

By: *

Peter J. Barris

Director

NEA PARTNERS 13, L.P.

By:	NEA 13 GP, LTD General Partner

By: *

Peter J. Barris

Director

NEA 13 GP, LTD

By: * & #xA0;

Peter J. Barris

Director

Michael James Barrett

Peter J. Barris

CUSIP No. 881569107

13D

Page 20 of 26 Pages

Forest Baskett

Patrick J. Kerins

David M. Mott

Scott D. Sandell

Ravi Viswanathan

NEA 15 OPPORTUNITY FUND, L.P.

By:	NEA PARTNERS 15-OF, L.P. General Partner

By:

NEA 15 GP, LLC
General Partner

By: *

Louis S. Citron

Chief Legal Officer

NEA PARTNERS 15-OF, L.P.

By:	NEA 15 GP, LLC General Partner

By: *

Louis S. Citron

Chief Legal Officer

NEA 15 GP, LLC

By: *

Louis S. Citron

Chief Legal Officer

CUSIP No. 881569107

13D

Page 21 of 26 Pages

Peter J. Barris

Forest Baskett

David M. Mott

Scott D. Sandell

Ravi Viswanathan

*/s/ Sasha O. Keough

Sasha O. Keough

As attorney-in-fact

This Amendment No. 3 to Schedule 13D was executed by Sasha O. Keough on behalf of the individuals listed above pursuant to a Power of Attorney a copy of which is attached as Exhibit 2.

CUSIP No. 881569107

13D

Page 22 of 26 Pages

EXHIBIT 1

AGREEMENT

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13D need be filed with respect to the ownership by each of the undersigned of shares of stock of TESARO, Inc.

EXECUTED this 9^th day of March, 2018.

NEW ENTERPRISE ASSOCIATES 13, L.P.

By:	NEA PARTNERS 13, L.P. General Partner

By:

NEA 13 GP, LTD
General Partner

By: *

Peter J. Barris

Director

NEA PARTNERS 13, L.P.

By:	NEA 13 GP, LTD General Partner

By: *

Peter J. Barris

Director

NEA 13 GP, LTD

By: *

Peter J. Barris

Director

* & #xA0;

Michael James Barrett

Peter J. Barris

CUSIP No. 881569107

13D

Page 23 of 26 Pages

Forest Baskett

Patrick J. Kerins

David M. Mott

Scott D. Sandell

Ravi Viswanathan

NEA 15 OPPORTUNITY FUND, L.P.

By:	NEA PARTNERS 15-OF, L.P. General Partner

By:

NEA 15 GP, LLC
General Partner

By: *

Louis S. Citron

Chief Legal Officer

NEA PARTNERS 15-OF, L.P.

By:	NEA 15 GP, LLC General Partner

By: *

Louis S. Citron

Chief Legal Officer

NEA 15 GP, LLC

By: *

Louis S. Citron

Chief Legal Officer

CUSIP No. 881569107

13D

Page 24 of 26 Pages

* &#x A0;

Peter J. Barris

Forest Baskett

David M. Mott

Scott D. Sandell

Ravi Viswanathan

*/s/ Sasha O. Keough

Sasha O. Keough

As attorney-in-fact

This Agreement relating to Schedule 13D was executed by Sasha O. Keough on behalf of the individuals listed above pursuant to a Power of Attorney a copy of which is attached hereto as Exhibit 2.

CUSIP No. 881569107

13D

Page 25 of 26 Pages

EXHIBIT 2

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and appoints Louis S. Citron, Timothy Schaller, Sasha Keough and Stephanie Brecher, and each of them, with full power to act without the others, his or her true and lawful attorney-in-fact, with full power of substitution, to sign any and all instruments, certificates and documents that may be necessary, desirable or appropriate to be executed on behalf of himself as an individual or in his or her capacity as a direct or indirect general partner, director, officer or manager of any partnership, corporation or limited liability company, pursuant to section 13 or 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any and all regulations promulgated thereunder, and to file the same, with all exhibits thereto, and any other documents in connection therewith, with the Securities and Exchange Commission, and with any other entity when and if such is mandated by the Exchange Act or by the Financial Industry Regulatory Authority, granting unto said attorney-in-fact full power and authority to do and perform each and every act and thing necessary, desirable or appropriate, fully to all intents and purposes as he or she might or could do in person, thereby ratifying and confirming all that said attorney-in-fact, or his or her substitutes, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, this Power of Attorney has been signed as of the 13th day of March, 2017.

/s/ M. James Barrett

M. James Barrett

/s/ Peter J. Barris

Peter J. Barris

/s/ Forest Baskett

Forest Baskett

/s/ Ali Behbahani

Ali Behbahani

/s/ Colin Bryant

Colin Bryant

/s/ Carmen Chang

Carmen Chang

/s/ Anthony A. Florence, Jr.

Anthony A. Florence, Jr.

/s/ Carol G. Gallagher

Carol G. Gallagher

/s/ Dayna Grayson

Dayna Grayson

/s/ Patrick J. Kerins

Patrick J. Kerins

/s/ P. Justin Klein

P. Justin Klein

/s/ Vanessa Larco

Vanessa Larco

/s/ Joshua Makower

Joshua Makower

CUSIP No. 881569107

13D

Page 26 of 26 Pages

/s/ Mohamad H. Makhzoumi

Mohamad H. Makhzoumi

/s/ Edward T. Mathers

Edward T. Mathers

/s/ David M. Mott

David M. Mott

/s/ Sara M. Nayeem

Sara M. Nayeem

/s/ Jason R. Nunn

Jason R. Nunn

/s/ Gregory Papadopoulos

Gregory Papadopoulos

/s/ Chetan Puttagunta

Chetan Puttagunta

/s/ Jon Sakoda

Jon Sakoda

/s/ Scott D. Sandell

Scott D. Sandell

/s/ A. Brooke Seawell

A. Brooke Seawell

/s/ Peter W. Sonsini

Peter W. Sonsini

/s/ Melissa Taunton

Melissa Taunton

/s/ Frank M. Torti

Frank M. Torti

/s/ Ravi Viswanathan

Ravi Viswanathan

/s/ Paul E. Walker

Paul E. Walker

/s/ Rick Yang

Rick Yang

Sec Form 13D Filing - NEW ENTERPRISE ASSOCIATES 13 LP filing for TESARO Inc. (TSRO) - 2018-03-09