Brilliant Earth COO sells 10,124 shares

Accepted by SEC EDGAR 05/20/2026 - 04:09 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Brilliant Earth Group, Inc. Chief Operations Officer Sharon Dziesietnik reported an open-market sale of 10,124 shares of Class A common stock at a weighted average price of $1.15 per share. The shares were sold to cover estimated tax obligations tied to vesting of restricted stock units under a pre-arranged Rule 10b5-1 trading plan. After the sale, she directly holds 542,572 shares.

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 ($12K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	10,124	$1.15	$12K

Holdings After Transaction: Class A Common Stock — 542,572 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 $1.12 to $1.21. 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: $1.15 per share Post-transaction holdings: 542,572 shares +1 more

4 metrics

Shares sold 10,124 shares Open-market sale of Class A Common Stock

Weighted average sale price $1.15 per share Average across multiple trades on transaction date

Post-transaction holdings 542,572 shares Directly held by COO after sale

Trade price range $1.12–$1.21 per share Lowest and highest prices of individual trades

Key Terms

restricted stock units, Rule 10b5-1 trading plan, weighted average sale price, open-market sale

4 terms

restricted stock units financial

"to cover estimated tax obligations 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.

Rule 10b5-1 trading plan regulatory

"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

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.

weighted average sale price financial

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

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

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

What insider transaction did Brilliant Earth (BRLT) report for Sharon Dziesietnik?

Brilliant Earth reported that Chief Operations Officer Sharon Dziesietnik sold 10,124 shares of Class A common stock. The sale was an open-market transaction at a weighted average price of $1.15 per share to address estimated tax obligations from vesting restricted stock units.

Why did the Brilliant Earth COO sell 10,124 BRLT shares?

The 10,124 shares were sold to cover estimated tax obligations arising from the vesting and settlement of restricted stock units. This type of sale is typically a compensation-related event rather than a discretionary portfolio move, as it directly funds required tax payments.

At what price were Sharon Dziesietnik’s Brilliant Earth shares sold?

The filing lists a weighted average sale price of $1.15 per share, with individual trade prices ranging from $1.12 to $1.21. These trades together represent the total 10,124 shares sold in the open market on the reported transaction date.

How many Brilliant Earth shares does the COO hold after this Form 4 transaction?

After the reported sale, Chief Operations Officer Sharon Dziesietnik directly holds 542,572 shares of Brilliant Earth Class A common stock. This indicates she retains a substantial position in the company even after selling shares to cover tax obligations from vested restricted stock units.

Was the Brilliant Earth COO’s share sale under a Rule 10b5-1 plan?

Yes. The filing states the transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 14, 2025. Such plans pre-schedule trades, helping separate routine liquidity or tax transactions from opportunistic market timing.

What does the price range in the Brilliant Earth insider sale mean?

The sale was executed in multiple trades at prices between $1.12 and $1.21 per share. The reported $1.15 per share is the weighted average across these trades, and the insider undertook to provide detailed trade information to regulators or shareholders upon request.

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

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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)
05/18/2026

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	05/18/2026		S		10,124(1)	D	$1.15(2)	542,572	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 $1.12 to $1.21. 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	05/20/2026
	** 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)