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, 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 *   LINDNER JEREMY 2. Date of Event Requiring Statement (Month/Day/Year) 02/01/2018 3. Issuer Name and Ticker or Trading Symbol COBIZ FINANCIAL INC [COBZ] (Last) (First) (Middle) 1401 LAWRENCE ST., STE.1200 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Credit Officer 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) DENVER, CO 80202 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 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 7,857 (1) D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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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 of Derivative Security: 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
Non-Qualified Stock Option (right to buy)	07/20/2018	07/20/2022	Common Stock	1,000 (2)	$ 12.7	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LINDNER JEREMY 1401 LAWRENCE ST., STE.1200 DENVER, CO 80202	Â	Â	  Chief Credit Officer	Â

Signatures

By: Lyne Andrich For: Jeremy Lindner		02/16/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Includes: i) 1771 unvested restricted shares, part of a 5315 ratably vesting restricted share award granted 7/20/2015. All unvested shares will vest on 7/20/2018; ii) 2226 unvested restricted shares, part of a 4839 ratably vesting restricted share award granted 3/7/2016. Unvested restricted shares will vest in equal parts on 3/7/2018 and 3/7/2019; iii) Includes 2860 unvested restricted shares relating to a ratably vesting restricted share award granted 3/7/2017. Unvested restricted shares will vest in equal parts on 3/7/2018, 3/7/2019 and 3/7/2020.
(2)	Options vest ratably over a three year period from the date of grant. Of the original 2000 shares granted on 7/20/2015, 1334 have vested and 1000 were previously exercised. On 7/20/2018 the remaining unvested options will vest and become exercisable. The option expires no later than 7/20/2022.

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