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
                                                                                  
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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 *

Cavet Guy		 2. Issuer Name and Ticker or Trading Symbol

Atreca, Inc. [ BCEL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

C/O ATRECA, INC., 450 EAST JAMIE COURT		 3. Date of Earliest Transaction (MM/DD/YYYY)

1/17/2020
(Street)

SOUTH SAN FRANCISCO, CA 94080
(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
Class A Common Stock 1/17/2020  M  1919 A$5.16 109677 D  
Class A Common Stock 1/17/2020  S(1)  6395 D$14.8391 (2)103282 D  
Class A Common Stock 1/17/2020  S(1)  524 D$15.5897 (3)102758 D  

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
Stock Option (right to buy) $5.16 1/17/2020  M     1919   (4)4/27/2028 Class A Common Stock 1919 $0.00 48080 D  
Explanation of Responses:
(1) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2019.
(2) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.44 to $15.40, inclusive. The reporting person undertakes to provide to Atreca, Inc., any security holder of Atreca, Inc., or the staff of the Securities and Exchange Commission, upon request,full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.
(3) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.45 to $15.68, inclusive. The reporting person undertakes to provide to Atreca, Inc., any security holder of Atreca, Inc., or the staff of the Securities and Exchange Commission, upon request,full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.
(4) 1/48 of the Option vests in equal monthly installments as measured from 4/16/2018. The shares subject to this option are early exercisable, subject to the Issuer's right of repurchase. If applicable, vesting accelerates as provided in, and subject to the terms and conditions of, that certain Executive Employment Agreement between the Issuer and the Reporting Person, as may be amended from time to time.
Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Cavet Guy
C/O ATRECA, INC., 450 EAST JAMIE COURT
SOUTH SAN FRANCISCO, CA 94080

Chief Technical Officer
Signatures
/s/ Herbert Cross, Attorney-In-Fact1/22/2020
**Signature of Reporting PersonDate
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