CRA INTERNATIONAL, INC. Insider Trading Activity

CRA International EVP and General Counsel Jonathan D. Yellin reported open-market sales of company common stock.

Rhea-AI Filing Summary

CRA International EVP and General Counsel Jonathan D. Yellin reported open-market sales of company common stock. On May 19, 2026, he sold a total of 2,250 shares in three transactions at prices around $146–$148 per share.

The filing notes that these trades were executed under a Rule 10b5-1 trading plan adopted on November 10, 2025, indicating they were pre-arranged. Following the sales, Yellin directly holds 13,247 shares of CRA International common stock.

Insider Trade Summary 10b5-1

Net Seller: 2,250 shares

Net Sell 3 txns

Insider Yellin Jonathan D

Role EVP AND GENERAL COUNSEL

Sold 2,250 shs ($332K)

Type	Security	Shares	Price	Value
Sale	Common Stock	250	$146.3663	$37K
Sale	Common Stock	400	$147.445	$59K
Sale	Common Stock	1,600	$148.00	$237K

Holdings After Transaction: Common Stock — 13,247 shares (Direct)

Footnotes (3)

1. F1. The price in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $145.87 to $146.46, 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 sold at each separate price.
2. F2. These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 10, 2025.
3. F3. The price in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $147.00 to $147.78, 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 sold at each separate price.

Key Figures

Total shares sold: 2,250 shares First sale tranche: 1,600 shares at $148.00 Second sale tranche: 400 shares at $147.4450 +3 more

6 metrics

Total shares sold 2,250 shares Open-market sales on May 19, 2026

First sale tranche 1,600 shares at $148.00 Common stock open-market sale

Second sale tranche 400 shares at $147.4450 Common stock open-market sale

Third sale tranche 250 shares at $146.3663 Common stock open-market sale

Shares held after transactions 13,247 shares Direct ownership after May 19, 2026 sales

Rule 10b5-1 plan adoption date November 10, 2025 Covers the reported May 19, 2026 sales

Key Terms

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

3 terms

Rule 10b5-1 trading plan regulatory

"These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 10, 2025."

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 price financial

"The price in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $145.87 to $146.46, inclusive."

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.

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

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Accepted by SEC EDGAR 05/20/2026 - 05:53 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).

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^*

Yellin Jonathan D

(Last) (First) (Middle)

200 CLARENDON STREET

(Street)

BOSTON MASSACHUSETTS 02116

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CRA INTERNATIONAL, INC. [ CRAI ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP AND GENERAL COUNSEL

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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	05/19/2026		S		250	D	$146.3663(1)	15,247	D(2)
Common Stock	05/19/2026		S		400	D	$147.445(3)	14,847	D(2)
Common Stock	05/19/2026		S		1,600	D	$148	13,247	D(2)

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 in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $145.87 to $146.46, 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 sold at each separate price.

2. These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 10, 2025.

3. The price in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $147.00 to $147.78, 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 sold at each separate price.

	Delia J. Makhlouta, by power of attorney	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)