Brilliant Earth (BRLT) COO sells 10K shares under 10b5-1 plan

Rhea-AI Filing Summary

Brilliant Earth Group, Inc. (BRLT) reported that Chief Operations Officer Sharon Dziesietnik sold 10,124 shares of Class A common stock on 2026-08-17 at a weighted average price of $1.27 per share. The shares were sold to cover estimated tax obligations arising from the vesting and settlement of restricted stock units, and the transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on August 14, 2025. Following this sale, Dziesietnik directly holds 532,448 shares of Class A common stock.

Insider Trade Summary 10b5-1

Net Seller: 10,124 shares

Net Sell 1 txn

Insider Dziesietnik Sharon

Role Chief Operations Officer

Sold 10,124 shs ($13K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2	10,124	$1.27	$13K

Holdings After Transaction: Class A Common Stock — 532,448 shares (Direct)

Footnotes (2)

1. F1. Shares of Class A common stock sold by the reporting person to cover estimated tax obligations in connection with the vesting and settlement of restricted stock units. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 14, 2025.
2. F2. This transaction was executed in multiple trades ranging from $1.19 to $1.36. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.

Key Figures

Shares sold: 10,124 shares Weighted average sale price: $1.27 per share Post-transaction holdings: 532,448 shares +2 more

5 metrics

Shares sold 10,124 shares Class A Common Stock sold by COO Sharon Dziesietnik on 2026-08-17

Weighted average sale price $1.27 per share Weighted average price for the 10,124 shares sold on 2026-08-17

Post-transaction holdings 532,448 shares Direct Class A Common Stock held by Sharon Dziesietnik after the sale

Trade price range $1.19 to $1.36 per share Range of individual trade prices within the reported sale

Shares sold for tax obligations 10,124 shares Shares sold to cover estimated tax obligations on RSU vesting

Key Terms

Rule 10b5-1 trading plan, restricted stock units, weighted average sale price, estimated tax obligations

4 terms

Rule 10b5-1 trading plan regulatory

"This transaction was effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"in connection with the vesting and settlement of 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.

weighted average sale price financial

"The price reported above reflects the weighted average sale price"

estimated tax obligations financial

"sold by the reporting person to cover estimated tax obligations"

FAQ

What insider transaction did BRLT report for Sharon Dziesietnik on August 17, 2026?

Brilliant Earth Group, Inc. reported that COO Sharon Dziesietnik sold 10,124 BRLT Class A shares on 2026-08-17. The sale was to cover estimated tax obligations from restricted stock unit vesting and used a pre-established Rule 10b5-1 trading plan.

At what price were the BRLT shares sold in Sharon Dziesietnik’s Form 4 filing?

The Form 4 reports a weighted average sale price of $1.27 per BRLT share. A footnote states the transaction was executed in multiple trades with prices ranging from $1.19 to $1.36, with $1.27 reflecting the weighted average sale price.

How many BRLT shares does Sharon Dziesietnik hold after this reported sale?

After the reported sale, COO Sharon Dziesietnik holds 532,448 shares of BRLT Class A common stock directly. This post-transaction holding reflects her remaining direct ownership following the sale of 10,124 shares to cover estimated tax obligations.

Why did Sharon Dziesietnik sell BRLT shares according to the Form 4 footnotes?

The filing states the 10,124 BRLT shares were sold to cover estimated tax obligations related to the vesting and settlement of restricted stock units. The transaction is characterized as tax-related rather than a discretionary sale of investment holdings.

Was the BRLT insider sale by Sharon Dziesietnik under a Rule 10b5-1 plan?

Yes. The Form 4 notes the sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Sharon Dziesietnik on August 14, 2025. The document’s Rule 10b5-1 checkbox is also affirmatively marked for this transaction.

How many BRLT shares were sold in total by Sharon Dziesietnik in this Form 4?

The Form 4 reports a single transaction in which 10,124 shares of BRLT Class A common stock were sold. The transaction summary shows a net-sell position of 10,124 shares, with no reported purchases, option exercises, or gifts in this filing.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/19/2026 - 04:02 PM Accepted by SEC EDGAR 08/19/2026 - 04:02 PM 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).

X

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^*

Dziesietnik Sharon

(Last) (First) (Middle)

C/O BRILLIANT EARTH GROUP, INC.

300 GRANT AVENUE, THIRD FLOOR

(Street)

SAN FRANCISCO CALIFORNIA 94108

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Brilliant Earth Group, Inc. [ BRLT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operations Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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
Class A Common Stock	08/17/2026		S		10,124(1)	D	$1.27(2)	532,448	D

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. Shares of Class A common stock sold by the reporting person to cover estimated tax obligations in connection with the vesting and settlement of restricted stock units. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 14, 2025.

2. This transaction was executed in multiple trades ranging from $1.19 to $1.36. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.

Remarks:

	/s/ Sharon Dziesietnik	08/19/2026
	** 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)