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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Downing Maxwell J   2. Issuer Name and Ticker or Trading Symbol LATTICE SEMICONDUCTOR CORP [LSCC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) CFO (Last) (First) (Middle) 111 SW 5TH AVE., 7TH FL. 3. Date of Earliest Transaction (Month/Day/Year) 08/31/2018 (Street) PORTLAND, OR 97204 4. If Amendment, Date 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 (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 08/31/2018   M   10,496 A $ 5.4 36,367 D   Common Stock 08/31/2018   M   21,897 A $ 7.54 58,264 D   Common Stock 08/31/2018   M   26,247 A $ 5.85 84,511 D   Common Stock 08/31/2018   M   23,561 A $ 5.88 108,072 D   Common Stock 08/31/2018   M   17,121 A $ 5.73 125,193 D   Common Stock 08/31/2018   S   99,322 D $ 8.1282 (1) 25,871 D   Common Stock 08/31/2018   S   19,538 D $ 8.1305 (1) 6,333 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (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)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Non-Qualified Stock Option (right to buy)

$ 5.4

08/31/2018

M

10,496

06/25/2013(2)

03/25/2020

Common Stock

10,496

$ 0

0

D

Non-Qualified Stock Option (right to buy)

$ 5.73

08/31/2018

M

17,121

01/18/2018(3)

10/18/2024

Common Stock

17,121

$ 0

62,779

D

Non-Qualified Stock Option (right to buy)

$ 5.85

08/31/2018

M

26,247

10/09/2015(2)

07/09/2022

Common Stock

26,247

$ 0

8,749

D

Non-Qualified Stock Option (right to buy)

$ 5.88

08/31/2018

M

23,561

10/19/2016(2)

07/19/2023

Common Stock

23,561

$ 0

23,562

D

Non-Qualified Stock Option (right to buy)

$ 7.54

08/31/2018

M

21,897

06/21/2014(2)

03/21/2021

Common Stock

21,897

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Downing Maxwell J 111 SW 5TH AVE., 7TH FL. PORTLAND, OR 97204			CFO

Signatures

By: Byron W. Milstead, Attorney,in-Fact For: Maxwell J. Downing		09/04/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(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).
(1)	The price indicated is the weighted average sale price for the shares sold. The individual sale prices for the shares indicated range from $8.10 to $8.15.
(2)	This option to purchase shares of common stock becomes exercisable over a four year period where in 1/16th (6.25%) of the total shares granted vest on each quarterly anniversary of the grant date.
(3)	This option to purchase shares of common stock becomes exercisable over a three and half year period where in 1/14th of the total shares granted vest on each quarterly anniversary of the grant date.

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