CS Disco EVP sells shares to cover RSU taxes

CS Disco, Inc. executive Melanie Antoon, EVP and Chief Customer Officer, reported an open-market sale of 8,590 shares of common stock at a weighted average price of about $3.61 per share, with trades ranging from $3.61 to $3.63.

Rhea-AI Filing Summary

CS Disco, Inc. executive Melanie Antoon, EVP and Chief Customer Officer, reported an open-market sale of 8,590 shares of common stock at a weighted average price of about $3.61 per share, with trades ranging from $3.61 to $3.63. According to the disclosure, all shares were sold in a mandatory sale to cover taxes and fees due upon the release and settlement of restricted stock units, and were not disposed of for any other reason. Following this tax-related transaction, Antoon directly holds 276,021 shares of CS Disco common stock.

Insider Trade Summary

Net Seller: 8,590 shares

Net Sell 1 txn

Insider Antoon Melanie

Role EVP, Chief Customer Officer

Sold 8,590 shs ($31K)

Type	Security	Shares	Price	Value
Sale	Common Stock	8,590	$3.61	$31K

Holdings After Transaction: Common Stock — 276,021 shares (Direct)

Footnotes (2)

1. F1. Represents the aggregate number of shares sold by the Reporting Person as a result of a mandatory sale to cover taxes and fees due upon the release and settlement of restricted stock units. The Reporting Person did not sell or otherwise dispose of any of the shares reported on this Form 4 for any reason other than to cover required taxes and fees.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.61 to $3.63. 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 sold at each separate price within the range.

Key Figures

Shares sold: 8,590 shares Weighted average sale price: $3.61 per share Post-transaction holdings: 276,021 shares +1 more

4 metrics

Shares sold 8,590 shares Open-market sale on 2026-05-18 to cover RSU taxes and fees

Weighted average sale price $3.61 per share Common stock sale with trades from $3.61 to $3.63

Post-transaction holdings 276,021 shares Directly held by Melanie Antoon after the reported sale

Price range of trades $3.61–$3.63 per share Multiple transactions executed within this price range

Key Terms

restricted stock units, weighted average price, open-market sale, mandatory sale

4 terms

restricted stock units financial

"mandatory sale to cover taxes and fees due upon the release 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 price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

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.

mandatory sale financial

"Represents the aggregate number of shares sold ... as a result of a mandatory sale to cover taxes and fees"

FAQ

What insider transaction did CS Disco (LAW) report for Melanie Antoon?

Melanie Antoon reported selling 8,590 CS Disco shares. The sale was an open-market transaction tied to covering taxes and fees from restricted stock units, rather than a discretionary reduction of her investment position.

Why did Melanie Antoon sell CS Disco (LAW) shares in this Form 4 filing?

The shares were sold to cover taxes and fees from RSU settlement. The filing states it was a mandatory sale associated with restricted stock units, and no shares were sold for other personal portfolio reasons.

How many CS Disco (LAW) shares does Melanie Antoon hold after the sale?

After the transaction, Melanie Antoon directly holds 276,021 CS Disco shares. This figure reflects her remaining position following the 8,590-share tax-related sale reported in the Form 4 filing.

At what price were Melanie Antoon’s CS Disco (LAW) shares sold?

The reported weighted average sale price was about $3.61 per share. The filing notes multiple trades executed between $3.61 and $3.63, with details available upon request from the company or regulators.

Does this CS Disco (LAW) Form 4 indicate a trading plan or discretionary sale?

The filing describes a mandatory sale to cover RSU-related taxes and fees. It does not characterize the transaction as a discretionary portfolio move, instead tying it directly to restricted stock unit settlement obligations.

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

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Accepted by SEC EDGAR 05/19/2026 - 04:10 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).

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^*

Antoon Melanie

(Last) (First) (Middle)

111 CONGRESS AVE.

SUITE 900

(Street)

AUSTIN TEXAS 78701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CS Disco, Inc. [ LAW ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Customer 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
Common Stock	05/18/2026		S		8,590(1)	D	$3.61(2)	276,021	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. Represents the aggregate number of shares sold by the Reporting Person as a result of a mandatory sale to cover taxes and fees due upon the release and settlement of restricted stock units. The Reporting Person did not sell or otherwise dispose of any of the shares reported on this Form 4 for any reason other than to cover required taxes and fees.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.61 to $3.63. 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 sold at each separate price within the range.

Remarks:

	/s/ Aaron Barfoot, Attorney-in-Fact	05/19/2026
	** 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)