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 *
Zimmer Jeffrey J
  2. Issuer Name and Ticker or Trading Symbol
Armour Residential REIT, Inc. [ARR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Co-CEO, President & CFO
(Last)
(First)
(Middle)
3001 OCEAN DRIVE, SUITE 201
3. Date of Earliest Transaction (Month/Day/Year)
03/31/2012
(Street)

VERO BEACH, FL 32963
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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Phantom Stock (1) (2) (3) (4) 03/31/2012   A   6,095     (1)(2)(3)   (1)(2)(3) Common Stock 6,095 (4) 6,095 (1) D  
Phantom Stock (1) (2) (3) (4) 06/30/2012   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 7,314 (1) D  
Phantom Stock (1) (2) (3) (4) 09/30/2012   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 8,533 (1) D  
Phantom Stock (1) (2) (3) (4) 12/31/2012   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 9,752 (1) D  
Phantom Stock (1) (2) (3) (4) 03/31/2013   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 10,971 (1) D  
Phantom Stock (1) (2) (3) (4) 06/30/2013   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 12,190 (1) D  
Phantom Stock (1) (2) (3) (4) 09/30/2013   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 13,409 (1) D  
Phantom Stock (1) (2) (3) (4) 12/31/2013   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 14,628 (1) D  
Phantom Stock (1) (2) (3) (4) 03/31/2014   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 15,847 (1) D  
Phantom Stock (1) (2) (3) (4) 06/30/2014   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 17,066 (1) D  
Phantom Stock (1) (2) (3) (4) 09/30/2014   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 18,285 (1) D  
Phantom Stock (1) (2) (3) (4) 12/31/2014   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 19,504 (1) D  
Phantom Stock (1) (2) (3) (4) 03/31/2015   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 20,723 (1) D  
Phantom Stock (1) (2) (3) (4) 06/30/2015   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 21,942 (1) D  
Phantom Stock (1) (2) (3) (4) 09/30/2015   A   1,219     (1)(2)(3)   (1)(2)(3) Common Stock 1,219 (4) 23,161 (1) D  
Phantom Stock (1) (2) (3) (4) 12/31/2015   A   1,214     (1)(2)(3)   (1)(2)(3) Common Stock 1,214 (4) 24,375 (1) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Zimmer Jeffrey J
3001 OCEAN DRIVE
SUITE 201
VERO BEACH, FL 32963
  X     Co-CEO, President & CFO  

Signatures

 /s/ Jeffrey J. Zimmer   04/03/2012
**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 reporting person was granted an aggregate of 24,375 shares of phantom stock under ARMOUR Residential REIT, Inc.'s 2009 Stock Incentive Compensation Plan pursuant to a vesting schedule described below. 6,095 shares of the reporting person's phantom stock vested on March 31, 2012 with an additional 1,219 shares of phantom stock vesting on the last day of each fiscal quarter until September 30, 2015. On December 31, 2015, 1,214 shares will vest, at which time all phantom stock will be vested. The 24,375 shares of phantom stock is in addition to the 73,125 shares of phantom stock granted to the reporting person and subject to a five-year vesting schedule, which began on March 31, 2011. The 73,125 shares were separately reported on a Form 4 filed by the reporting party April 4, 2011.
(2) Upon termination of the reporting person's service with ARMOUR Residential Management LLC, ARMOUR's manager, or the termination of the Management Agreement between ARMOUR and ARRM, all phantom shares which have not vested prior to or concurrently with such termination will be forfeited by the reporting person; provided, however, that the phantom shares will vest if the termination is due to death, disability, termination without cause, or retirement after age 62. The phantom shares will automatically vest upon a change in control of ARMOUR. The reporting person will be entitled to an equal number of shares of ARMOUR common stock within 30 days of vesting.
(3) The reporting person also has the right to elect to receive the amount of cash necessary to pay any income taxes instead of some of the shares of ARMOUR common stock. With respect to each phantom share, the reporting person will receive a cash payment in an amount equal to the cash dividend distributions paid in the ordinary course on a share of ARMOUR common stock.
(4) Each unit of phantom stock is the economic equivalent of one share of ARMOUR common stock.

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