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Nierenberg Eric

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25162
SEC CIK
0002074844

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CompanyLast reported asReport datePublished
CRA INTERNATIONAL, INC.CRAI · Entity 923EVP, CFO AND TREASURERSeptember 14, 2026September 16, 2026

Disclosed balances

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Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

CRA INTERNATIONAL, INC.

Report date September 14, 2026 · Filed September 16, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect559.9511 Reported balance After 2026-09-14 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-09-14 · Grant · Acquired 1.9165 · Balance 559.9511

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2: The RSUs, which include an aggregate of 8.9511 Dividend Units, vest in three equal annual installments beginning on August 4, 2027.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect917.5915 Reported balance After 2026-09-14 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-09-14 · Grant · Acquired 3.1405 · Balance 917.5915

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F3: The RSUs, which include an aggregate of 6.5915 Dividend Units, vest in four equal annual installments beginning on April 9, 2027.

Common StockSEC Table I · non-derivativeDirect129 Reported balance Holding disclosure · report date 2026-09-14 · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · Balance 129

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2: The RSUs, which include an aggregate of 8.9511 Dividend Units, vest in three equal annual installments beginning on August 4, 2027.

F3: The RSUs, which include an aggregate of 6.5915 Dividend Units, vest in four equal annual installments beginning on April 9, 2027.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 14, 2026 Filed Sep 16, 2026 20:58 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 3.1405 $0.00 $0.00
Disclosure

SEC source: 0002074844-26-000015 · form4-09162026_080930.xml · derivative · entry 3

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 917.5915

Underlying: Common Stock · 3.1405 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F3 · derivative.exercise_date: The RSUs, which include an aggregate of 6.5915 Dividend Units, vest in four equal annual installments beginning on April 9, 2027.

F3 · derivative.expiration_date: The RSUs, which include an aggregate of 6.5915 Dividend Units, vest in four equal annual installments beginning on April 9, 2027.

Read SEC document
September 14, 2026 Filed Sep 16, 2026 20:58 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 1.9165 $0.00 $0.00
Disclosure

SEC source: 0002074844-26-000015 · form4-09162026_080930.xml · derivative · entry 2

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 559.9511

Underlying: Common Stock · 1.9165 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs, which include an aggregate of 8.9511 Dividend Units, vest in three equal annual installments beginning on August 4, 2027.

F2 · derivative.expiration_date: The RSUs, which include an aggregate of 8.9511 Dividend Units, vest in three equal annual installments beginning on August 4, 2027.

Read SEC document
August 04, 2026 Filed Aug 10, 2026 21:43 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 Exercise / conversionRestricted Stock Units · Derivative 185.3362 $0.00 $0.00
Disclosure

SEC source: 0002074844-26-000012 · form4-08102026_090858.xml · derivative · entry 4

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 558.0346

Underlying: Common Stock · 743.3708 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs, which include an aggregate of 7.0346 Dividend Units, vest in three equal annual installments beginning on August 4, 2027.

F2 · derivative.expiration_date: The RSUs, which include an aggregate of 7.0346 Dividend Units, vest in three equal annual installments beginning on August 4, 2027.

Read SEC document
August 04, 2026 Filed Aug 10, 2026 21:43 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 Tax withholdingCommon Stock 54 $180.85 $9,765.90
Disclosure

SEC source: 0002074844-26-000012 · form4-08102026_090858.xml · nonDerivative · entry 3

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129

Read SEC document
August 04, 2026 Filed Aug 10, 2026 21:43 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 Disposition to issuerCommon Stock 2.3362 $180.85 $422.50
Disclosure

SEC source: 0002074844-26-000012 · form4-08102026_090858.xml · nonDerivative · entry 2

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 183

Read SEC document
August 04, 2026 Filed Aug 10, 2026 21:43 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 Exercise / conversionCommon Stock 185.3362 Not disclosed Not disclosed
Disclosure

SEC source: 0002074844-26-000012 · form4-08102026_090858.xml · nonDerivative · entry 1

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 185.3362

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 22:04 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 3.451 $0.00 $0.00
Disclosure

SEC source: 0002074844-26-000009 · form4-06162026_100636.xml · derivative · entry 2

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 914.451

Underlying: Common Stock · 3.451 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F3 · derivative.exercise_date: The RSUs, which include an aggregate of 3.4510 Dividend Units, vest in four equal annual installments beginning on April 9, 2027.

F3 · derivative.expiration_date: The RSUs, which include an aggregate of 3.4510 Dividend Units, vest in four equal annual installments beginning on April 9, 2027.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 22:04 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 2.8054 $0.00 $0.00
Disclosure

SEC source: 0002074844-26-000009 · form4-06162026_100636.xml · derivative · entry 1

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 743.3708

Underlying: Common Stock · 2.8054 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs, which include an aggregate of 9.3708 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

F2 · derivative.expiration_date: The RSUs, which include an aggregate of 9.3708 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

Read SEC document
April 09, 2026 Filed Apr 13, 2026 22:11 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 911 $0.00 $0.00
Disclosure

SEC source: 0002074844-26-000006 · form4-04132026_100403.xml · derivative · entry 1

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 911

Underlying: Common Stock · 911 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs vest in four equal annual installments beginning on April 9, 2027.

F2 · derivative.expiration_date: The RSUs vest in four equal annual installments beginning on April 9, 2027.

Read SEC document
March 20, 2026 Filed Mar 24, 2026 22:07 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 2.655 $0.00 $0.00
Disclosure

SEC source: 0002074844-26-000003 · form4-03242026_100304.xml · derivative · entry 1

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 740.5654

Underlying: Common Stock · 2.655 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs, which include an aggregate of 6.5654 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

F2 · derivative.expiration_date: The RSUs, which include an aggregate of 6.5654 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

Read SEC document
December 12, 2025 Filed Dec 16, 2025 23:01 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 2.0954 $0.00 $0.00
Disclosure

SEC source: 0002074844-25-000006 · form4-12162025_111226.xml · derivative · entry 1

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 737.9104

Underlying: Common Stock · 2.0954 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs, which include an aggregate of 3.9104 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

F2 · derivative.expiration_date: The RSUs, which include an aggregate of 3.9104 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

Read SEC document
September 12, 2025 Filed Sep 16, 2025 23:02 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 1.815 $0.00 $0.00
Disclosure

SEC source: 0002074844-25-000003 · form4-09162025_110950.xml · derivative · entry 1

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 735.815

Underlying: Common Stock · 1.815 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs, which include an aggregate of 1.8150 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

F2 · derivative.expiration_date: The RSUs, which include an aggregate of 1.8150 Dividend Units, vest in four equal annual installments beginning on August 4, 2026.

Read SEC document
August 04, 2025 Filed Aug 6, 2025 22:19 UTC CRA INTERNATIONAL, INC. CRAI · Entity 923 GrantRestricted Stock Units · Derivative 734 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-021201 · form4-08062025_100853.xml · derivative · entry 1

Nierenberg Eric · CIK 0002074844 · EVP, CFO AND TREASURER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 734

Underlying: Common Stock · 734 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock; vested RSUs are payable in the form of cash, shares of the Issuer's common stock or a combination thereof, except as otherwise indicated below. To the extent vested RSUs are paid in shares of the Issuer's common stock, such shares will be delivered to the reporting person as soon as possible after vesting, but in no event later than two and one-half months after the end of the year in which vesting occurs, subject to the collection of withholding taxes. Dividend equivalent rights accrue with respect to unvested RSUs in the form of additional RSUs ("Dividend Units") when and as dividends are paid on the Issuer's common stock, and Dividend Units vest on the same dates and in the same relative proportions as the RSUs on which they accrue.

F2 · derivative.exercise_date: The RSUs vest in four equal annual installments beginning on August 4, 2026.

F2 · derivative.expiration_date: The RSUs vest in four equal annual installments beginning on August 4, 2026.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.