Dynex Capital co-CEO Boston buys 9,180 shares

His reported direct position includes unvested restricted stock units, alongside common shares listed as held by family members.

Rhea-AI Filing Summary

Dynex Capital, Inc. (DX) Co-CEO & Chairman of the Board Byron L. Boston purchased 9,180 shares of common stock on October 20, 2026, at a weighted-average price of $10.89 per share. The shares were purchased in multiple transactions at prices ranging from $10.87 to $10.92, inclusive. His direct holdings after the purchase were 892,747 shares, including unvested restricted stock units. Indirect holdings listed were 3,095 shares held jointly by his spouse and son, plus 1,500 shares held by each of his two sons. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Net Buyer: 9,180 shares

Net Buy 4 txns

Insider BOSTON BYRON L

Role Co-CEO & Chairman of the Board

Bought 9,180 shs ($100K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1, F2	9,180	$10.89	$100K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 892,747 shares (Direct); Common Stock — 3,095 shares (Indirect, By spouse and son jointly); Common Stock — 1,500 shares (Indirect, By son); Common Stock — 1,500 shares (Indirect, By 2nd son)

Footnotes (2)

1. F1. The price reported is a weighted average. These shares were purchased in multiple transactions at prices ranging from $10.87 to $10.92, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range.
2. F2. Includes unvested restricted stock units.

Key Figures

Common shares purchased: 9,180 shares Weighted-average purchase price: $10.89 per share Purchase price range: $10.87 to $10.92 per share +4 more

7 metrics

Common shares purchased 9,180 shares October 20, 2026

Weighted-average purchase price $10.89 per share October 20, 2026

Purchase price range $10.87 to $10.92 per share Multiple transactions on October 20, 2026; inclusive

Direct holdings after purchase 892,747 shares October 20, 2026; includes unvested restricted stock units

Indirect shares held jointly 3,095 shares Held by his spouse and son jointly as of October 20, 2026

Indirect shares held by son 1,500 shares As of October 20, 2026

Indirect shares held by second son 1,500 shares As of October 20, 2026

Key Terms

weighted average, restricted stock units, Rule 10b5-1 plan

3 terms

weighted average financial

"The price reported is a weighted average."

A weighted average is a way of calculating an overall number when some items matter more than others by giving each item a different level of importance, or weight. Investors use weighted averages to combine figures like prices, returns or earnings so the result reflects the size or significance of each part — like grading a class where a final exam counts more than a quiz, producing a score that better represents true performance.

restricted stock units financial

"Includes unvested restricted stock units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 10b5-1 plan regulatory

"No Rule 10b5-1 plan is reported."

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many shares did DX Co-CEO Byron L. Boston buy?

Byron L. Boston purchased 9,180 shares of DX common stock on October 20, 2026, at a weighted-average price of $10.89 per share. The transactions were at prices ranging from $10.87 to $10.92, inclusive, and no Rule 10b5-1 plan is reported.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/21/2026 - 04:14 PM EDT Accepted by SEC EDGAR 10/21/2026 - 04:07 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

BOSTON BYRON L

(Last) (First) (Middle)

C/O DYNEX CAPITAL, INC.

140 EASTSHORE DRIVE, SUITE 100

(Street)

GLEN ALLEN VIRGINIA 23059

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DYNEX CAPITAL INC [ DX ]

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 & Chairman of the Board

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	10/20/2026		P		9,180	A	$10.89(1)	892,747(2)	D
Common Stock								3,095	I	By spouse and son jointly
Common Stock								1,500	I	By son
Common Stock								1,500	I	By 2nd son

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. The price reported is a weighted average. These shares were purchased in multiple transactions at prices ranging from $10.87 to $10.92, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range.

2. Includes unvested restricted stock units.

Remarks:

	/s/ Kathy E. Rhodes, as attorney-in-fact for Byron L. Boston	10/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)