SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Donohue Ann K. (Last) (First) (Middle) 480 ARSENAL WAY (Street) WATERTOWN MA 02472 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/07/2019	3. Issuer Name and Ticker or Trading Symbol SELECTA BIOSCIENCES INC [ SELB ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Controller	5. If Amendment, Date of Original Filed (Month/Day/Year)
			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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	1,216	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	(1)	03/22/2027	Common Stock	5,100	10.89	D
Stock Option (Right to Buy)	(2)	06/15/2027	Common Stock	1,108	17.47	D
Stock Option (Right to Buy)	(3)	06/11/2028	Common Stock	10,000	12.46	D
Stock Option (Right to Buy)	(4)	01/06/2029	Common Stock	25,000	2.6	D

Explanation of Responses:

1. This option vested as to 25% on September 12, 2017. The remainder of the underlying shares vest in 36 equal monthly installments thereafter.

2. This option vested as to 25% on June 16, 2018. The remainder of the underlying shares vest in 36 equal monthly installments thereafter.

3. This option will vest as to 25% on June 12, 2019. The remainder of the underlying shares will vest in 36 equal monthly installments thereafter.

4. This option will vest as to 25% on January 7, 2020. The remainder of the underlying shares vest in 36 equal monthly installments thereafter.

Remarks:

	Ann K. Donohue	05/15/2019
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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