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 *
SPEARS ROBERT R JR
   2. Issuer Name and Ticker or Trading Symbol
CAPSTEAD MORTGAGE CORP [CMO] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
Officer
(Last)
(First)
(Middle)
8401 N. CENTRAL EXPWY.STE. 800		 3. Date of Earliest Transaction (Month/Day/Year)
01/03/2017
(Street)

DALLAS, TX 75225		 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 01/03/2017   D(1)   4,572 D $ 10.41 358,317 D  
Common Stock 01/04/2017   A   27,617 A (2) 385,934 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
Performance Units $ 10 01/03/2017   A   55,235   01/05/2017 01/05/2017 Common Stock (3) (3) 253,836 (3) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SPEARS ROBERT R JR
8401 N. CENTRAL EXPWY.STE. 800
DALLAS, TX 75225		       Officer  

Signatures

 /s/ SPEARS ROBERT R JR   01/05/2017
**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) Represents shares of common stock forfeited to satisy the Reporting Person's tax withholding olbligation upon the vesting of restricted stock on January 3, 2017.
(2) Represents a portion of the executive's 2016 long-term incentive compensation. The unvested stock awards, granted from the Amended and Restated 2014 Flexible Incentive Plan, vest 100% at the end of year three. Dividends associated with these shares will only be paid upon vesting of the awards.
(3) Represents the primary component of the executive's 2016 long-term incentive compensation. The performance units ("Units") are convertible into common stock of the Issuer after December 31, 2019 and before March 15, 2020, with the conversion factor determined formulaically, based on achievement of stated performance criteria. The Units target a one-for-one conversion ratio into the common stock of the Issuer; however, the actual conversion ratio will be dependent on the achievement of the performance objectives outlined in the Issuer's 2017 Long-Term Award criteria. The Units could expire without converting into any shares of common stock of the Issuer or could be convertible into as many as 200% of the number of Units granted to the Reporting Person provided maximum thresholds are achieved for all performance objectives. The Units will terminate on December 31, 2019 if minimum performance criteria are not achieved for any of the performance objectives.

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