Gordon Harper - 24 Feb 2026 Form 4 Insider Report for Armour Residential REIT, Inc. (ARR)

Role: CFO
Signature: /s/ Gordon Harper
Issuer symbol: ARR
Transactions as of: 24 Feb 2026
Net transactions value: -$26,638
Form type: 4
Filing time: 26 Feb 2026, 16:03:30 UTC
Previous filing: 25 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Harper Gordon	CFO	3001 OCEAN DRIVE, SUITE 201, VERO BEACH	/s/ Gordon Harper	26 Feb 2026	0001698344

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ARR	Common Stock, par value $0.001 per share	Options Exercise	$0	+4,000	+17%	$0.000000	28,126	24 Feb 2026	Direct	F1
transaction	ARR	Common Stock, par value $0.001 per share	Tax liability	$26,638	-1,489	-5.3%	$17.89	26,637	24 Feb 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ARR	Phantom Stock	Options Exercise	$0	-4,000	-6.4%	$0.000000	58,600	24 Feb 2026	Common Stock	4,000		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On February 24, 2026, the reporting person elected to convert 2,511 of the 4,000 shares of vested phantom stock into 2,511 shares of ARMOUR common stock. The reporting person elected to convert the remaining 1,489 shares of vested phantom stock into cash solely to pay income taxes on the vested stock. The 4,000 shares are part of, and relate to phantom stock vesting over a six year period, which was reported on a Form 4 report filed by the reporting person on January 14, 2021, phantom stock vesting over a six-and-a-half year period, which was reported on a Form 4 report filed by the reporting person on February 16, 2023, phantom stock vesting over a three year period which was reported on a Form 4 report filed by the reporting person on May 16, 2024 and phantom stock vesting over a five-year period, which was reported on a Form 4 report filed by the reporting person on April 30, 2025.
F2	Each unit of phantom stock is the economic equivalent of one share of ARMOUR common stock.

Content

On February 24, 2026, the reporting person elected to convert 2,511 of the 4,000 shares of vested phantom stock into 2,511 shares of ARMOUR common stock. The reporting person elected to convert the remaining 1,489 shares of vested phantom stock into cash solely to pay income taxes on the vested stock. The 4,000 shares are part of, and relate to phantom stock vesting over a six year period, which was reported on a Form 4 report filed by the reporting person on January 14, 2021, phantom stock vesting over a six-and-a-half year period, which was reported on a Form 4 report filed by the reporting person on February 16, 2023, phantom stock vesting over a three year period which was reported on a Form 4 report filed by the reporting person on May 16, 2024 and phantom stock vesting over a five-year period, which was reported on a Form 4 report filed by the reporting person on April 30, 2025.

Each unit of phantom stock is the economic equivalent of one share of ARMOUR common stock.