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

 

SCHEDULE 13G

(Amendment No. 1)

 

 

Under the Securities Exchange Act of 1934

 

NXSTAGE MEDICAL, INC.

(Name of Issuer)

 

Common Stock

(Title of Class of Securities)

 

67072V103

(CUSIP Number)

 

December 31, 2013

(Date of Event Which Requires Filing of this Statement)

 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

 

[_] Rule 13d-1(b)

 

[X] Rule 13d-1(c)

 

[_] Rule 13d-1(d)

 

The information required in 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 (the “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).

  

 
 

 

 

 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

Larry N. Feinberg

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3 SEC USE ONLY
4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

United States

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH:

5

SOLE VOTING POWER

 

150,862

6

SHARED VOTING POWER

 

3,372,681

7

SOLE DISPOSITIVE POWER

 

150,862

8

SHARED DISPOSITIVE POWER

 

3,372,681

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

3,523,543

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

5.8%

12

TYPE OF REPORTING PERSON (See Instructions)

 

IN

 

 

 
 

 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

Oracle Partners, L.P.

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3

SEC USE ONLY

 

4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

Delaware

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH: 

5

SOLE VOTING POWER

 

0

6

SHARED VOTING POWER

 

2,395,614

7

SOLE DISPOSITIVE POWER

 

0

8

SHARED DISPOSITIVE POWER

 

2,395,614

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

2,395,614

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

3.9%

12

TYPE OF REPORTING PERSON (See Instructions)

 

PN

 

 

 
 

 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

Oracle Institutional Partners, L.P.

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3

SEC USE ONLY

 

4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

Delaware

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH: 

5

SOLE VOTING POWER

 

0

6

SHARED VOTING POWER

 

354,037

7

SOLE DISPOSITIVE POWER

 

0

8

SHARED DISPOSITIVE POWER

 

354,037

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

354,037

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

0.6%

12

TYPE OF REPORTING PERSON (See Instructions)

 

PN

 
 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

Oracle Associates, LLC

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3

SEC USE ONLY

 

4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

Delaware

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH: 

5

SOLE VOTING POWER

 

0

6

SHARED VOTING POWER

 

2,749,651

7

SOLE DISPOSITIVE POWER

 

0

8

SHARED DISPOSITIVE POWER

 

2,749,651

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

2,749,651

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

4.5%

12

TYPE OF REPORTING PERSON (See Instructions)

 

OO

 
 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

Oracle Ten Fund Master, L.P.

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3

SEC USE ONLY

 

4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

Cayman Islands

 

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH: 

5

SOLE VOTING POWER

 

0

6

SHARED VOTING POWER

 

546,524

7

SOLE DISPOSITIVE POWER

 

0

8

SHARED DISPOSITIVE POWER

 

546,524

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

546,524

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

0.9%

12

TYPE OF REPORTING PERSON (See Instructions)

 

OO

 

 

 
 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

Oracle Investment Management, Inc. Employees’ Retirement Plan

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3

SEC USE ONLY

 

4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

Connecticut

 

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH: 

5

SOLE VOTING POWER

 

0

6

SHARED VOTING POWER

 

64,906

7

SOLE DISPOSITIVE POWER

 

0

8

SHARED DISPOSITIVE POWER

 

64,906

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

64,906

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

0.1%

12

TYPE OF REPORTING PERSON (See Instructions)

 

EP

 

 

 
 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

Oracle Investment Management, Inc.

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3

SEC USE ONLY

 

4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

Delaware

 

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH: 

5

SOLE VOTING POWER

 

0

6

SHARED VOTING POWER

 

611,430

7

SOLE DISPOSITIVE POWER

 

0

8

SHARED DISPOSITIVE POWER

 

611,430

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

611,430

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

1.0%

12

TYPE OF REPORTING PERSON (See Instructions)

 

CO

 

 

 

 
 

 

 

1

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 

The Feinberg Family Foundation

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

 

(a) [_]

(b) [_]

 

3

SEC USE ONLY

 

4

CITIZENSHIP OR PLACE OF ORGANIZATION

 

Connecticut

 

NUMBER OF

 

SHARES

 

BENEFICIALLY

 

OWNED BY

 

EACH

 

REPORTING

 

PERSON

 

WITH: 

5

SOLE VOTING POWER

 

0

6

SHARED VOTING POWER

 

11,600

7

SOLE DISPOSITIVE POWER

 

0

8

SHARED DISPOSITIVE POWER

 

11,600

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

11,600

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_]
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

0.0%

12

TYPE OF REPORTING PERSON (See Instructions)

 

OO

 

 

 

 
 

 

This Amendment No. 1 to Schedule 13G (this "Amendment No. 1") is being filed with respect to the Common Stock, par value $.001 (“Common Stock”) of NxStage Medical, Inc., a Delaware corporation (the “Issuer”), to amend the Schedule 13G filed on December 30, 2013 (as so amended, the “Schedule 13G”), in accordance with the annual amendment requirements. Capitalized terms used but not defined herein have the meaning ascribed thereto in the Schedule 13G.

 

Item 4. Ownership:

 

Item 4 of the Schedule 13G is hereby amended and restated as follows:

 

The percentage of shares owned is based upon 60,930,965 shares of the Issuer’s Common Stock issued and outstanding as of November 1, 2013, as set forth in the Issuer’s most recent Quarterly Report on Form 10-Q for the period ended September 30, 2013, filed with the Securities and Exchange Commission on November 7, 2013.

 

The beneficial ownership of the Reporting Persons as of the date of this Amendment No. 1 is set forth below. This filing and any future amendments hereto shall not be considered an admission that any Reporting Person is a beneficial owner of shares beneficially owned by any other Reporting Person named herein.

 

A. Larry N. Feinberg
(a) Amount beneficially owned: 3,523,543
(b) Percent of class: 5.8%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 150,862
(ii) Shared power to vote or direct the vote: 3,372,681
(iii) Sole power to dispose or direct the disposition: 150,862
(iv) Shared power to dispose or direct the disposition: 3,372,681

 

B. Oracle Partners, L.P.
(a) Amount beneficially owned: 2,395,614
(b) Percent of class: 3.9%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 2,395,614
(iii) Sole power to dispose or direct the disposition: 0
(iv) Shared power to dispose or direct the disposition: 2,395,614

 

C. Oracle Institutional Partners, L.P.
(a) Amount beneficially owned: 354,037
(b) Percent of class: 0.6%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 354,037
(iii) Sole power to dispose or direct the disposition: 0
(iv) Shared power to dispose or direct the disposition: 354,037
 
 

 

D. Oracle Associates, LLC
(a) Amount beneficially owned: 2,749,651
(b) Percent of class: 4.5%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 2,749,651
(iii) Sole power to dispose or direct the disposition: 0
(iv) Shared power to dispose or direct the disposition: 2,749,651

 

E. Oracle Ten Fund Master, L.P.
(a) Amount beneficially owned: 546,524
(b) Percent of class: 0.9%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 546,524
(iii) Sole power to dispose or direct the disposition: 0
(iv) Shared power to dispose or direct the disposition: 546,524

 

F. Oracle Investment Management, Inc. Employees’ Retirement Plan
(a) Amount beneficially owned: 64,906
(b) Percent of class: 0.1%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 64,906
(iii) Sole power to dispose or direct the disposition: 0
(iv) Shared power to dispose or direct the disposition: 64,906

 

G. Oracle Investment Management, Inc.
(a) Amount beneficially owned: 611,430
(b) Percent of class: 1.0%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 611,430
(iii) Sole power to dispose or direct the disposition: 0
(iv) Shared power to dispose or direct the disposition: 611,430

 

H. The Feinberg Family Foundation
(a) Amount beneficially owned: 11,600
(b) Percent of class: 0.0%
(c) Number of shares as to which such person has:
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 11,600
(iii) Sole power to dispose or direct the disposition: 0
(iv) Shared power to dispose or direct the disposition: 11,600
 
 

 

Item 10. Certification:

 

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

 

 
 

 

SIGNATURE

 

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

 

Dated: February 7, 2014

 

 

 

/s/ Larry N. Feinberg

Larry N. Feinberg, Individually

 

ORACLE PARTNERS, L.P.

By: ORACLE ASSOCIATES, LLC, its general partner

 

By: /s/ Larry N. Feinberg

Larry N. Feinberg, Managing Member

 

ORACLE INSTITUTIONAL PARTNERS, L.P.

By: ORACLE ASSOCIATES, LLC, its general partner

 

By: /s/ Larry N. Feinberg

Larry N. Feinberg, Managing Member

 

ORACLE ASSOCIATES, LLC

 

By: /s/ Larry N. Feinberg

Larry N. Feinberg, Managing Member

 

ORACLE TEN FUND MASTER, L.P.

 

By: ORACLE ASSOCIATES, LLC, its general partner

 

By: /s/ Larry N. Feinberg

Larry N. Feinberg, Managing Member

 

ORACLE INVESTMENT MANAGEMENT, INC. EMPLOYEES’ RETIREMENT PLAN

 

By: /s/ Aileen Wiate

Aileen Wiate, Trustee

 

 
 

ORACLE INVESTMENT MANAGEMENT, INC.

 

By: /s/ Larry N. Feinberg

Larry N. Feinberg, Managing Member

 

 

THE FEINBERG FAMILY FOUNDATION

 

By: /s/ Larry N. Feinberg

Larry N. Feinberg, Trustee

 

 
 

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