Ownership Submission
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 *
Wiedel Willis T
   2. Issuer Name and Ticker or Trading Symbol
COBIZ FINANCIAL INC [COBZ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
1401 LAWRENCE ST., STE.1200		 3. Date of Earliest Transaction (Month/Day/Year)
10/01/2018
(Street)

DENVER, CO 80202		 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 10/01/2018   D   1,605 D (1) 0 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) $ 6.62 10/01/2018(2)(3)   D     1,000 05/17/2012 05/17/2019 Common Stock 1,000 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $ 9.56 10/01/2018(2)(3)   D     1,000 05/15/2013 05/15/2020 Common Stock 1,000 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $ 11.08 10/01/2018(2)(3)   D     1,000 05/15/2014 05/15/2021 Common Stock 1,000 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $ 13.61 10/01/2018(2)(3)   D     1,000 04/15/2015 04/15/2022 Common Stock 1,000 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Wiedel Willis T
1401 LAWRENCE ST., STE.1200
DENVER, CO 80202		   X      

Signatures

 By Lyne Andrich POA for Willis Wiedel   10/03/2018
**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) Shares disposed of pursuant to the Agreement and Plan of Merger, dated as of June 17, 2018 (the "Merger Agreement"), by and among CoBiz Financial Inc. ("Issuer"), and BOK Financial Corporation ("BOKF Parent"), and BOKF Merger Corporation Number Sixteen ("Merger Sub"), a wholly owned subsidiary of BOKF Parent, on October 1, 2018, Issuer was merged with and into Merger Sub, with Merger Sub continuing as the surviving corporation (the "Merger"). At the time of the merger, each share of Issuer common stock was converted into the right to receive merger consideration consisting of (i) 0.17 shares of BOKF Parent common stock and (ii) $5.70 cash ("Merger Consideration").
(2) Stock options were fully vested and exercisable at the time of the Merger.
(3) Pursuant to the Agreement and Plan of Merger, dated as of June 17, 2018 (the "Merger Agreement"), by and among, CoBiz Financial Inc. ("Issuer"), and BOK Financial Corporation ("BOKF Parent"), and BOKF Merger Corporation Number Sixteen ("Merger Sub"), a wholly owned subsidiary of BOKF Parent, on October 1, 2018, Issuer was merged with and into Merger Sub, with Merger Sub continuing as the surviving corporation (the "Merger"). Outstanding and unexercised stock options were canceled and converted to the right to receive merger consideration consisting of BOKF Parent common stock and cash based on the formula described in Section 1.9 of the Merger Agreement. Each Issuer common share resulting from the cancelation and conversion of a stock option was exchanged for 0.17 shares of BOKF Parent common stock and $5.70 cash.

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