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13G Filing: Eastern Capital Ltd and Synlogic Inc. (SYBX)

You can access the original SEC filing by clicking here.

Ownership Summary Table

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
EASTERN CAPITAL LIMITED 0 159,820 0 159,820 159,820 1.0%
PORTFOLIO SERVICES LTD 0 159,820 0 159,820 159,820 1.0%
KENNETH B. DART 0 159,820 0 159,820 159,820 1.0%

Page 1 of 8 – SEC Filing

 

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

SCHEDULE 13G/A

Under the Securities Exchange
Act of 1934
(Amendment No. 1)*

Synlogic, Inc.

(Name of Issuer)

COMMON STOCK, $0.001
PAR VALUE PER SHARE

(Title of Class of Securities)

87166L100

(CUSIP Number)

William Sullivan,
10 Market Street, #773 Camana Bay Grand Cayman, KY1-9006 CAYMAN ISLANDS, 345-640-3330

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

August 28, 2017

(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)
  Rule
13d-1(c)

¨  Rule 13d-1(d)

* 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).

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Page 2 of 8 – SEC Filing

CUSIP No. 87166L100 13G/A Page 2 of 8
1. NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

EASTERN CAPITAL LIMITED
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
 
159,820
7. SOLE DISPOSITIVE POWER
 
0
8. SHARED DISPOSITIVE POWER
 
159,820
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

159,820
10. CHECK 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

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Page 3 of 8 – SEC Filing

CUSIP No. 87166L100 13G/A Page 3 of 8
1. NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

PORTFOLIO SERVICES LTD.
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
 
159,820
7. SOLE DISPOSITIVE POWER
 
0
8. SHARED DISPOSITIVE POWER
 
159,820
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

159,820
10. CHECK 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

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Page 4 of 8 – SEC Filing

CUSIP No. 87166L100 13G/A Page 4 of 8
1. NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

KENNETH B. DART
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
 
159,820
7. SOLE DISPOSITIVE POWER
 
0
8. SHARED DISPOSITIVE POWER
 
159,820
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

159,820
10. CHECK 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)

IN

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Page 5 of 8 – SEC Filing

CUSIP No. 87166L100 13G/A Page 5 of 8

Item 1.

(a) Name of Issuer
Synlogic, Inc.
(b) Address of Issuer’s Principal Executive Offices
200 Sidney St., Suite 320, Cambridge MA, 02139

Item 2.

(a)

Name of Person Filing
1) EASTERN CAPITAL LIMITED

Eastern Capital Limited is a direct wholly owned subsidiary of Portfolio
Services Ltd., a Cayman Islands company.

2) PORTFOLIO SERVICES LTD.

Portfolio Services Ltd. is a holding company which owns all of the outstanding
shares of Eastern Capital Limited, a Cayman Islands company.

3) KENNETH B. DART

Mr. Dart is the beneficial owner of all of the outstanding shares of Portfolio
Services Ltd., which in turns owns all the outstanding shares of Eastern Capital Limited.

(b)

Address of the Principal Office or, if none, residence
1) 10 Market Street, #773

Camana Bay

Grand Cayman, KY1-9006 CAYMAN ISLANDS

2) 10 Market Street, #773

Camana Bay

Grand Cayman, KY1-9006 CAYMAN ISLANDS

3) P.O. Box 31300

Grand Cayman, KY1-1206 CAYMAN ISLANDS

(c)

Citizenship


1) CAYMAN ISLANDS

2) CAYMAN ISLANDS

3) BRITISH OVERSEAS TERRITORY CITIZEN CAYMAN ISLANDS

(d) Title of Class of Securities
Common Stock, $0.001 par value per share
(e) CUSIP Number
87166L100

 

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Page 6 of 8 – SEC Filing

 

CUSIP No. 87166L100    13G Page 6 of 8

Item 3.  If this statement is filed pursuant
to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a) ¨ Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
(b) ¨ Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
(c) ¨ Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
(d) ¨ Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
(e) ¨ An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);
(f) ¨ An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);
(g) ¨ A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);
(h) ¨ A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i) ¨ A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j) ¨ Group, in accordance with §240.13d-1(b)(1)(ii)(J).

Item 4.  Ownership.

Provide the following information regarding the aggregate
number and percentage of the class of securities of the issuer identified in Item 1.

The percentage ownership noted
in this Schedule 13G is based on 16,282,496 shares outstanding as of August 28, 2017 as reported in the Issuer’s Form 8K
filed with the U.S. Securities and Exchange Commission on August 28, 2017.

As of the date of this filing, Eastern Capital Limited, Portfolio Services
Ltd. and Mr. Dart beneficially own in aggregate the following:

(a) Amount beneficially owned:  159,820
(b) Percent of class:  1.0%
(c) Number of shares as to which the person has:  
(i) Sole power to vote or to direct the vote  0
(ii) Shared power to vote or to direct the vote  159,820
(iii) Sole power to dispose or to direct the disposition of  0
(iv) Shared power to dispose or to direct the disposition of  159,820

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Page 7 of 8 – SEC Filing

 

CUSIP No. 87166L100 13G Page 7 of 8

Instruction. For computations regarding securities
which represent a right to acquire an underlying security see §240.13d-3(d)(1).

Item 5.  Ownership of Five Percent or
Less of a Class.

If
this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial
owner of more than five percent of the class of securities, check the following    
x.

Instruction. Dissolution of a group requires
a response to this item.

Item 6.  Ownership of More than Five Percent
on Behalf of Another Person.

Not Applicable

Item 7.  Identification and Classification
of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

Not Applicable

Item 8.  Identification and Classification
of Members of the Group.

Not Applicable

Item 9.  Notice of Dissolution of Group.

Not Applicable

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.

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Page 8 of 8 – SEC Filing

CUSIP No. 87166L100 13G Page 8 of 8

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.

Eastern Capital Limited

9/28/2017

Date

/s/
Kenneth B. Dart

Signature

Kenneth
B. Dart, Director

Name/Title

Portfolio Services Ltd.

9/28/2017

Date

/s/
Kenneth B. Dart

Signature

Kenneth
B. Dart, Director

Name/Title

Kenneth B. Dart

9/28/2017

Date

/s/
Kenneth B. Dart

Signature

Kenneth
B. Dart

Name/Title

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