FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response...
0.5                       
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

ADAMS STREET PARTNERS LLC
2. Issuer Name and Ticker or Trading Symbol

Aptinyx Inc. [ APTX ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    __X__ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle)

ONE NORTH WACKER DRIVE, SUITE 2700
3. Date of Earliest Transaction (MM/DD/YYYY)

1/29/2020
(Street)

CHICAGO, IL 60606
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ 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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 1/29/2020  J  V 90124 (1)A$0 185120 (2)I See footnote (3)(4)
Common Stock         5030628 (5)I See footnote (6)(7)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. 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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares

Explanation of Responses:
(1) Represents 20,246 shares received by Adams Street Partnership Fund - 2002 U.S. Fund, L.P. (AS 2002 US), 18,583 shares received by Adams Street Partnership Fund - 2003 U.S. Fund, L.P. (AS 2003 US), 14,354 shares received by Adams Street Partnership Fund - 2004 U.S. Fund, L.P. (AS 2004 US), 19,995 shares received by Adams Street Partnership Fund - 2005 U.S. Fund, L.P. (AS 2005 US), 1,186 shares received by Brinson Partnership Fund - 2004 Primary Fund, L.P. (BPF 2004 Primary), 796 shares received by The 2004 Primary Brinson Partnership Fund Offshore Series Company Ltd. (BPF 2004 Offshore), 2,472 shares received by Brinson Partnership Fund Trust - 2004 Primary Fund (BPF 2004 Trust) and 12,492 shares received by The Bank of New York Mellon as Trustee for the HP Inc. Master Trust (HP Trust), in each case, for no consideration as part of an exempt pro-rata distribution of shares on January 29, 2020 by a fund controlled by a third-party manager.
(2) Represents 41,587 shares held by AS 2002 US, 38,170 shares held by AS 2003 US, 29,484 shares held by AS 2004 US, 41,071 shares held by AS 2005 US, 2,436 shares held by BPF 2004 Primary, 1,635 shares held by BPF 2004 Offshore, 5,078 shares held by BPF 2004 Trust and 25,659 shares held by HP Trust. The foregoing totals reflect 21,341 shares received by AS 2002 US, 19,587 shares received by AS 2003 US, 15,130 shares received by AS 2004 US, 21,076 shares received by AS 2005 US, 1,250 shares received by BPF 2004 Primary, 839 shares received by BPF 2004 Offshore, 2,606 shares received by BPF 2004 Trust and 13,167 shares received by HP Trust, in each case, for no consideration as part of an exempt pro-rata distribution of shares on January 16, 2019 by a fund controlled by a third-party manager.
(3) The shares owned by each of AS 2002 US, AS 2003 US, AS 2004 US, AS 2005 US, BPF 2004 Primary, BPF 2004 Offshore, BPF 2004 Trust and HP Trust (the aforementioned funds, the "Funds") may be deemed to be beneficially owned by Adams Street Partners, LLC, the general partner of AS 2002 US, AS 2003 US, AS 2004 US and AS 2005 US; which is the sub-advisor and acts under power of attorney with respect to BPF 2004 Primary, BPF 2004 Offshore and BPF 2004 Trust; and which is the advisor and acts under power of attorney with respect to HP Trust. Thomas S. Bremner, Jeffrey T. Diehl, Elisha P. Gould, Robin Murray and Fred Wang, each of whom is a partner of Adams Street Partners, LLC (or a subsidiary thereof), may be deemed to share voting and dispositive power over the shares held by the Funds.
(4) Adams Street Partners, LLC and Thomas S. Bremner, Jeffrey T. Diehl, Elisha P. Gould, Robin Murray and Fred Wang disclaim beneficial ownership of the shares held by the Funds except to the extent of their pecuniary interest therein.
(5) Represents 249,791 shares held by Adams Street 2008 Direct Fund, L.P. (AS 2008 Direct), 216,053 shares held by Adams Street 2009 Direct Fund, L.P. (AS 2009 Direct), 122,728 shares held by Adams Street 2010 Direct Fund, L.P. (AS 2010 Direct), 106,754 shares held by Adams Street 2011 Direct Fund LP (AS 2011 Direct), 691,176 shares held by Adams Street 2012 Direct Fund LP (AS 2012 Direct), 522,837 shares held by Adams Street 2013 Direct Fund LP (AS 2013 Direct), 711,151 shares held by Adams Street 2014 Direct Fund LP (AS 2014 Direct), 504,708 shares held by Adams Street 2015 Direct Venture/Growth Fund LP (AS 2015 Direct), 439,714 shares held by Adams Street 2016 Direct Venture/Growth Fund LP (AS 2016 Direct) and 1,465,716 shares held by Adams Street Venture/Growth Fund VI LP (AS VG VI).
(6) The shares owned by each of AS 2008 Direct, AS 2009 Direct, AS 2010 Direct, AS 2011 Direct, AS 2012 Direct, AS 2013 Direct, AS 2014 Direct, AS 2015 Direct, AS 2016 Direct and AS VG VI (the aforementioned funds, the "Direct Funds") may be deemed to be beneficially owned by Adams Street Partners, LLC, the managing member of the general partner of each of AS 2008 Direct, AS 2009 Direct and AS 2010 Direct; and the managing member of the general partner of the general partner of AS 2011 Direct, AS 2012 Direct, AS 2013 Direct, AS 2014 Direct, AS 2015 Direct, AS 2016 Direct and AS VG VI. Thomas S. Bremner, Jeffrey T. Diehl, Elisha P. Gould, Robin Murray and Fred Wang, each of whom is a partner of Adams Street Partners, LLC (or a subsidiary thereof), may be deemed to share voting and dispositive power over the shares held by the Direct Funds.
(7) Adams Street Partners, LLC and Thomas S. Bremner, Jeffrey T. Diehl, Elisha P. Gould, Robin Murray and Fred Wang disclaim beneficial ownership of the shares held by the Direct Funds except to the extent of their pecuniary interest therein.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
ADAMS STREET PARTNERS LLC
ONE NORTH WACKER DRIVE
SUITE 2700
CHICAGO, IL 60606

X


Signatures
/s/ Sara Robinson Dasse2/14/2020
**Signature of Reporting PersonDate

Aptinyx (NASDAQ:APTX)
Historical Stock Chart
From Apr 2020 to May 2020 Click Here for more Aptinyx Charts.
Aptinyx (NASDAQ:APTX)
Historical Stock Chart
From May 2019 to May 2020 Click Here for more Aptinyx Charts.