CUSIP NO. 350465100
|
13D | Page 2 of 14 Pages |
1
|
NAMES OF REPORTING PERSONS.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Third Rock Ventures, L.P.
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) x
(b) o
|
||
3
|
SEC USE ONLY
|
||
4
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SOURCE OF FUNDS (SEE INSTRUCTIONS)
WC
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||
5
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CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) o
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||
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
828,456 shares
|
||
9
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SOLE DISPOSITIVE POWER
0 shares
|
||
10
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SHARED DISPOSITIVE POWER
828,456 shares
|
||
11
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AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
828,456 shares (1)
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||
12
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) o
|
||
13
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PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.4%
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||
14
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TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
PN
|
(1)
|
Includes only shares directly held by Third Rock Ventures, L.P. Third Rock Ventures, L.P. may be deemed to be part of a voting group and be deemed to have beneficial ownership of the shares held by such voting group. See Item 3.
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CUSIP NO. 350465100
|
13D | Page 3 of 14 Pages |
1
|
NAMES OF REPORTING PERSONS.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Third Rock Ventures GP, L.P.
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) x
(b) o
|
||
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS (SEE INSTRUCTIONS)
AF
|
||
5
|
CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) o
|
||
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
828,456 shares
|
||
9
|
SOLE DISPOSITIVE POWER
0 shares
|
||
10
|
SHARED DISPOSITIVE POWER
828,456 shares
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
828,456 shares (1)
|
||
12
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) o
|
||
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.4%
|
||
14
|
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
PN
|
(1)
|
Includes only shares directly held by Third Rock Ventures, L.P. Third Rock Ventures, L.P. may be deemed to be part of a voting group and be deemed to have beneficial ownership of the shares held by such voting group. See Item 3.
|
CUSIP NO. 350465100
|
13D | Page 4 of 14 Pages |
1
|
NAMES OF REPORTING PERSONS.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
TRV GP, LLC
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) x
(b) o
|
||
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS (SEE INSTRUCTIONS)
AF
|
||
5
|
CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) o
|
||
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
828,456 shares
|
||
9
|
SOLE DISPOSITIVE POWER
0 shares
|
||
10
|
SHARED DISPOSITIVE POWER
828,456 shares
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
828,456 shares (1)
|
||
12
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) o
|
||
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.4%
|
||
14
|
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
OO
|
(1)
|
Includes only shares directly held by Third Rock Ventures, L.P. Third Rock Ventures, L.P. may be deemed to be part of a voting group and be deemed to have beneficial ownership of the shares held by such voting group. See Item 3.
|
CUSIP NO. 350465100
|
13D | Page 5 of 14 Pages |
1
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NAMES OF REPORTING PERSONS.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Mark J. Levin
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) x
(b) o
|
||
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS (SEE INSTRUCTIONS)
AF
|
||
5
|
CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) o
|
||
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
United States citizen
|
||
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
|
7
|
SOLE VOTING POWER
16,859 shares
|
|
8
|
SHARED VOTING POWER
828,456 shares
|
||
9
|
SOLE DISPOSITIVE POWER
16,859 shares
|
||
10
|
SHARED DISPOSITIVE POWER
828,456 shares
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
845,315 shares (1)
|
||
12
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) o
|
||
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.4%
|
||
14
|
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IN
|
(1)
|
Includes shares directly held by Third Rock Ventures, L.P. Third Rock Ventures, L.P. may be deemed to be part of a voting group and be deemed to have beneficial ownership of the shares held by such voting group. See Item 3.
|
CUSIP NO. 350465100
|
13D | Page 6 of 14 Pages |
1
|
NAMES OF REPORTING PERSONS.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Kevin Starr
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) x
(b) o
|
||
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS (SEE INSTRUCTIONS)
AF
|
||
5
|
CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) o
|
||
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
United States citizen
|
||
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
|
7
|
SOLE VOTING POWER
2,417 shares
|
|
8
|
SHARED VOTING POWER
828,456 shares
|
||
9
|
SOLE DISPOSITIVE POWER
2,417 shares
|
||
10
|
SHARED DISPOSITIVE POWER
828,456 shares
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
830,873 shares (1)
|
||
12
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) o
|
||
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.4%
|
||
14
|
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IN
|
(1)
|
Includes shares directly held by Third Rock Ventures, L.P. Third Rock Ventures, L.P. may be deemed to be part of a voting group and be deemed to have beneficial ownership of the shares held by such voting group. See Item 3.
|
CUSIP NO. 350465100
|
13D | Page 7 of 14 Pages |
1
|
NAMES OF REPORTING PERSONS.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Dr. Robert I. Tepper
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) x
(b) o
|
||
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS (SEE INSTRUCTIONS)
AF
|
||
5
|
CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) o
|
||
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
United States citizen
|
||
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
|
7
|
SOLE VOTING POWER
2,936 shares
|
|
8
|
SHARED VOTING POWER
828,456 shares
|
||
9
|
SOLE DISPOSITIVE POWER
2,936 shares
|
||
10
|
SHARED DISPOSITIVE POWER
828,456 shares
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
831,392 shares (1)
|
||
12
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) o
|
||
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.4%
|
||
14
|
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IN
|
(1)
|
Includes shares directly held by Third Rock Ventures, L.P. Third Rock Ventures, L.P. may be deemed to be part of a voting group and be deemed to have beneficial ownership of the shares held by such voting group. See Item 3.
|
CUSIP NO. 350465100
|
13D | Page 8 of 14 Pages |
CUSIP NO. 350465100
|
13D | Page 9 of 14 Pages |
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(a)
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The acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer;
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(b)
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An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries;
|
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(c)
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A sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries;
|
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(d)
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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;
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(e)
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Any material change in the present capitalization or dividend policy of the Issuer;
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(f)
|
Any other material change in the Issuer’s business or corporate structure;
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(g)
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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;
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(h)
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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;
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(i)
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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
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(j)
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Any action similar to any of those enumerated above.
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CUSIP NO. 350465100
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13D | Page 10 of 14 Pages |
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(a)
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TRV is the record owner of the TRV Shares. As the sole general partner of TRV, TRV GP may be deemed to own beneficially the TRV Shares. As the sole general partner of TRV GP, TRV LLC may be deemed to own beneficially the TRV Shares. As members of TRV LLC, each of the Managers may be deemed to own beneficially the TRV Shares.
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(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)
|
On April 7, 2015, (i) TRV tendered 4,098,778 shares of Common Stock of the Issuer at $50 per share (the “Tender Price”) (for aggregate proceeds of $204,938,900), (ii) Starr tendered 14,372 shares of Common Stock of the Issuer at the Tender Price (for aggregate proceeds of $718,600) and (iii) Tepper tendered 14,525 shares of Common Stock of the Issuer at the Tender Price (for aggregate proceeds of $726,250) to Roche Entities pursuant to a tender offer disclosed in Amendment No. 6 to Schedule TO filed by Roche Entities with the SEC on April 7, 2015. Except as set forth in the preceding sentence, none of the Reporting Persons has effected any transaction in the Common Stock during the last 60 days.
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CUSIP NO. 350465100
|
13D | Page 11 of 14 Pages |
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(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, TRV Shares beneficially owned by any of the Reporting Persons.
|
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(e)
|
Not applicable.
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CUSIP NO. 350465100
|
13D | Page 12 of 14 Pages |
By:
|
THIRD ROCK VENTURES GP, L.P.
|
|
General Partner
|
By:
|
TRV GP, LLC
|
By:
|
TRV GP, LLC
|
*
|
*
|
*
|
CUSIP NO. 350465100
|
13D | Page 13 of 14 Pages |
By:
|
THIRD ROCK VENTURES GP, L.P.
|
|
General Partner
|
By:
|
TRV GP, LLC
|
By:
|
TRV GP, LLC
|
*
|
*
|
*
|
CUSIP NO. 350465100
|
13D | Page 14 of 14 Pages |