BERNSTEIN SETH P

SEC source: 0001628280-26-055771 · wk-form4_1786481316.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,969.5603

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001628280-26-042243 · wk-form4_1781123383.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,865.8303

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001705584-26-000005 · wk-form4_1777925441.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 212,046

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units").

F2 · shares: Reporting Person sold 29,000 AB Holding Units at a weighted average price of $39.539.

F2 · price: Reporting Person sold 29,000 AB Holding Units at a weighted average price of $39.539.

SEC source: 0001628280-26-017756 · wk-form4_1773435261.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,734.5603

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001628280-26-014927 · wk-form4_1772670778.xml · nonDerivative · entry 3

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,607.8003

F4 · shares: Shares withheld to cover taxes upon vesting of Performance Shares.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001628280-26-014927 · wk-form4_1772670778.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,917.8003

F3 · shares: Reflects the vesting of Performance Shares, which were granted pursuant to the registrant's 2019 Omnibus Incentive Plan. The Performance Shares were earned upon the attainment of certain performance objectives for the period January 1, 2023 through December 31, 2025.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001628280-26-014927 · wk-form4_1772670778.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,466.07

F1 · shares: Shares withheld to cover taxes upon vesting of previous Restricted Stock Unit grants.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001705584-26-000003 · wk-form4_1771535216.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 241,046

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units").

F2 · shares: Reporting Person sold 26,840 AB Holding Units at prices ranging from $40.69 to $41.57 per Unit. The price set forth in the table represents the weighted average sales price.

F2 · price: Reporting Person sold 26,840 AB Holding Units at prices ranging from $40.69 to $41.57 per Unit. The price set forth in the table represents the weighted average sales price.

SEC source: 0001628280-26-008278 · wk-form4_1771034346.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,215.07

F1 · shares: Grant of restricted stock units under the Issuer's 2019 Omnibus Incentive Plan exempt under Rule 16b-3. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer upon vesting. The restricted stock units vest in three ratable annual installments beginning on February 28, 2027. Vested shares will be delivered to the reporting person within 30 days following the vesting date.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001705584-25-000017 · wk-form4_1765573515.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by rabbi trust under employee incentive compensation plan

Disclosed balance after: 597,308

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units").

F2 · shares: Reporting Person's 2025 long-term incentive compensation award, which was approved by the Compensation and Workplace Practices Committee of the Board of Directors as of December 10, 2025, was made in the form of AB Holding Units. Reporting Person therefore may be deemed to have acquired 159,937 AB Holding Units. These AB Holding Units are held in a rabbi trust under AllianceBernstein's incentive compensation award program until they vest and are delivered to the Reporting Person. The award vests, subject to various agreements and covenants set forth in the applicable award agreement, in equal annual increments on each of December 1, 2026, 2027 and 2028.

F3 · price: The closing price of an AB Holding Unit (NYSE: AB) on the date as of which the award was approved and valued (December 10, 2025).

SEC source: 0001705584-25-000015 · wk-form4_1764799666.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 267,886

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · shares: On December 1, 2025, 65,719 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 36,343 AB Holding Units were withheld for tax purposes and 29,376 AB Holding Units were delivered to him.

F3 · price: The closing price of an AB Holding Unit for NYSE composite transactions on December 1, 2025.

SEC source: 0001705584-25-000015 · wk-form4_1764799666.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by rabbi trust under employee incentive compensation plan

Disclosed balance after: 437,371

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · shares: On December 1, 2025, 65,719 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 36,343 AB Holding Units were withheld for tax purposes and 29,376 AB Holding Units were delivered to him.

F3 · price: The closing price of an AB Holding Unit for NYSE composite transactions on December 1, 2025.

SEC source: 0001628280-25-054936 · wk-form4_1764776453.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,490.07

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001705584-25-000012 · wk-form4_1756159055.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 238,510

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units").

F2 · shares: Reporting Person sold 24,946 AB Holding Units at prices ranging from $40.00 to $40.16 per Unit. The price set forth in the table represents the weighted average sales price.

F2 · price: Reporting Person sold 24,946 AB Holding Units at prices ranging from $40.00 to $40.16 per Unit. The price set forth in the table represents the weighted average sales price.

SEC source: 0001705584-25-000010 · wk-form4_1755727262.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 263,456

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units").

F3 · shares: Reporting Person sold 480 AB Holding Units at $40.00 per Unit.

F3 · price: Reporting Person sold 480 AB Holding Units at $40.00 per Unit.

SEC source: 0001705584-25-000010 · wk-form4_1755727262.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 263,936

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units").

F2 · shares: Reporting Person sold 6,268 AB Holding Units at prices ranging from $40.00 to $40.44 per Unit. The price set forth in the table represents the weighted average sales price.

F2 · price: Reporting Person sold 6,268 AB Holding Units at prices ranging from $40.00 to $40.44 per Unit. The price set forth in the table represents the weighted average sales price.

SEC source: 0001705584-25-000004 · wk-form4_1755205356.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,375

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001628280-25-030753 · wk-form4_1749673460.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,279.85

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001628280-25-023211 · wk-form4_1746649885.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,184.71

F1 · price: This transaction was executed in multiple trades at prices ranging from $50.2700 to $50.6900. The price reported above reflects the weighted average sales 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.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001628280-25-012849 · wk-form4_1741985498.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,184.71

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001628280-25-009993 · wk-form4_1741127464.xml · nonDerivative · entry 3

BERNSTEIN SETH P · CIK 0001705584 · See remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,095.38

F4 · shares: Shares withheld to cover taxes upon vesting of Performance Shares.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001628280-25-009993 · wk-form4_1741127464.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · See remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,224.38

F3 · shares: Reflects the vesting of Performance Shares, which were granted pursuant to the registrant's 2019 Omnibus Incentive Plan. The Performance Shares were earned upon the attainment of certain performance objectives for the period January 1, 2022 through December 31, 2024.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001628280-25-009993 · wk-form4_1741127464.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,675.38

F1 · shares: Shares withheld to cover taxes upon vesting of previous Restricted Stock Unit grants.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001628280-25-006139 · wk-form4_1739918414.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,581.38

F1 · shares: Grant of restricted stock units under the Issuer's 2019 Omnibus Incentive Plan exempt under Rule 16b-3. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer upon vesting. The restricted stock units vest in three ratable annual installments beginning on February 28, 2026. Vested shares will be delivered to the reporting person within 30 days following the vesting date.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001705584-24-000008 · wk-form4_1735309463.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 270,204

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · price: The closing price on the NYSE of an AB Holding Unit (NYSE: AB) on December 24, 2024, the date on which the gift was given by the Reporting Person.

SEC source: 0001705584-24-000006 · wk-form4_1734126670.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by rabbi trust under employee incentive compensation plan

Disclosed balance after: 503,090

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · shares: Reporting Person's 2024 long-term incentive compensation award, which was approved by the Section 16 Subcommittee (a committee consisting entirely of independent directors) of the Compensation and Workplace Practices Committee of the Board of Directors as of December 11, 2024, was made in the form of AB Holding Units. Reporting Person therefore may be deemed to have acquired 140,232 AB Holding Units. These AB Holding Units are held in a rabbi trust under AllianceBernstein's incentive compensation award program until they vest and are delivered to the Reporting Person. The award vests, subject to various agreements and covenants set forth in the applicable award agreement, in equal annual increments on each of December 1, 2025, 2026 and 2027.

F3 · price: Closing price of an AB Holding Unit (NYSE: AB) on the date as of which the award was approved and valued (December 11, 2024).

F2 · balance_after: Reporting Person's 2024 long-term incentive compensation award, which was approved by the Section 16 Subcommittee (a committee consisting entirely of independent directors) of the Compensation and Workplace Practices Committee of the Board of Directors as of December 11, 2024, was made in the form of AB Holding Units. Reporting Person therefore may be deemed to have acquired 140,232 AB Holding Units. These AB Holding Units are held in a rabbi trust under AllianceBernstein's incentive compensation award program until they vest and are delivered to the Reporting Person. The award vests, subject to various agreements and covenants set forth in the applicable award agreement, in equal annual increments on each of December 1, 2025, 2026 and 2027.

SEC source: 0000950170-24-133389 · ownership.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,079.38

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes RSUs.

SEC source: 0001705584-24-000004 · wk-form4_1733349781.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 283,204

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · shares: On December 2, 2024, 59,442 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 32,872 AB Holding Units were withheld for tax purposes and 26,570 AB Holding Units were delivered to him.

F3 · price: The closing price of an AB Holding Unit for NYSE composite transactions on November 29, 2024.

F2 · balance_after: On December 2, 2024, 59,442 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 32,872 AB Holding Units were withheld for tax purposes and 26,570 AB Holding Units were delivered to him.

SEC source: 0001705584-24-000004 · wk-form4_1733349781.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by rabbi trust under employee incentive compensation plan

Disclosed balance after: 362,858

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · shares: On December 2, 2024, 59,442 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 32,872 AB Holding Units were withheld for tax purposes and 26,570 AB Holding Units were delivered to him.

F3 · price: The closing price of an AB Holding Unit for NYSE composite transactions on November 29, 2024.

F2 · balance_after: On December 2, 2024, 59,442 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 32,872 AB Holding Units were withheld for tax purposes and 26,570 AB Holding Units were delivered to him.

SEC source: 0000950170-24-097267 · ownership.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,961.83

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

SEC source: 0000950170-24-072021 · ownership.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,818.34

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes Restricted Stock Units and 22.46 previously unreported dividend equivalents earned on portions of the Reporting Person's 2021, 2022 and 2023 Long Term Incentive Compensation stock grants which vested on February 28, 2023 and February 28, 2024 and which were inadvertently excluded from Form 4s previously filed by the Reporting Person.

SEC source: 0000950170-24-053027 · ownership.xml · derivative · entry 5

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 57,209 shares

Expires 2030-02-26

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.

F4 · derivative.exercise_date: Grant of employee stock option under the Issuer's 2019 Omnibus Incentive Plan exempt under Rule 16b-3. The options vested in three installments beginning on February 26, 2021.

SEC source: 0000950170-24-053027 · ownership.xml · derivative · entry 4

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,209

Underlying: Common Stock · 65,446 shares

Expires 2029-02-14

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.

F3 · derivative.exercise_date: Grant of employee stock option under the Issuer's 2019 Omnibus Incentive Plan exempt under Rule 16b-3. The options vested in three installments beginning on February 14, 2020.

SEC source: 0000950170-24-053027 · ownership.xml · nonDerivative · entry 3

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,659.97

F2 · price: This transaction was executed in multiple trades at prices ranging from $38.0000 to $38.1400. The price reported above reflects the weighted average sales 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.

F1 · balance_after: Includes Restricted Stock Units.

SEC source: 0000950170-24-053027 · ownership.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 241,132.97

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 · balance_after: Includes Restricted Stock Units.

SEC source: 0000950170-24-053027 · ownership.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 183,923.97

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 · balance_after: Includes Restricted Stock Units.

SEC source: 0000950170-24-027288 · ownership.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,477.97

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0000950170-24-024070 · ownership.xml · nonDerivative · entry 3

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,327.59

F4 · shares: Shares withheld to cover taxes upon vesting of Performance Shares.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0000950170-24-024070 · ownership.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 121,740.59

F3 · shares: Reflects the vesting of Performance Shares, which were granted pursuant to the registrant's 2019 Omnibus Incentive Plan. The Performance Shares were earned upon the attainment of certain performance objectives for the period January 1, 2021 through December 31, 2023.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0000950170-24-024070 · ownership.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,272.59

F1 · shares: Shares withheld to cover taxes upon vesting of previous Restricted Stock Unit grants.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0000950170-24-016513 · ownership.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,353.59

F1 · shares: Grant of restricted stock units under the Issuer's 2019 Omnibus Incentive Plan exempt under Rule 16b-3. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer upon vesting. The restricted stock units vest in three ratable annual installments beginning on February 28, 2025. Vested shares will be delivered to the reporting person within 30 days following the vesting date.

F2 · balance_after: Total includes Restricted Stock Units.

SEC source: 0001705584-23-000007 · wk-form4_1702582797.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by rabbi trust under employee incentive compensation plan

Disclosed balance after: 422,300

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · kind: Reporting Person's 2023 long-term incentive compensation award, which was approved by the Section 16 Subcommittee (a committee consisting entirely of independent directors) of the Compensation and Workplace Practices Committee of the Board of Directors as of December 12, 2023, was made in the form of AB Holding Units. Reporting Person therefore may be deemed to have acquired 136,289 AB Holding Units. These AB Holding Units are held in a rabbi trust under AllianceBernstein's incentive compensation award program until they vest and are delivered to the Reporting Person. The award vests, subject to various agreements and covenants set forth in the applicable award agreement, in equal annual increments on each of December 1, 2024, 2025 and 2026.

F2 · shares: Reporting Person's 2023 long-term incentive compensation award, which was approved by the Section 16 Subcommittee (a committee consisting entirely of independent directors) of the Compensation and Workplace Practices Committee of the Board of Directors as of December 12, 2023, was made in the form of AB Holding Units. Reporting Person therefore may be deemed to have acquired 136,289 AB Holding Units. These AB Holding Units are held in a rabbi trust under AllianceBernstein's incentive compensation award program until they vest and are delivered to the Reporting Person. The award vests, subject to various agreements and covenants set forth in the applicable award agreement, in equal annual increments on each of December 1, 2024, 2025 and 2026.

F3 · price: Closing price of an AB Holding Unit (NYSE: AB) on the date as of which the award was approved and valued (December 12, 2023).

F2 · acquired: Reporting Person's 2023 long-term incentive compensation award, which was approved by the Section 16 Subcommittee (a committee consisting entirely of independent directors) of the Compensation and Workplace Practices Committee of the Board of Directors as of December 12, 2023, was made in the form of AB Holding Units. Reporting Person therefore may be deemed to have acquired 136,289 AB Holding Units. These AB Holding Units are held in a rabbi trust under AllianceBernstein's incentive compensation award program until they vest and are delivered to the Reporting Person. The award vests, subject to various agreements and covenants set forth in the applicable award agreement, in equal annual increments on each of December 1, 2024, 2025 and 2026.

F2 · balance_after: Reporting Person's 2023 long-term incentive compensation award, which was approved by the Section 16 Subcommittee (a committee consisting entirely of independent directors) of the Compensation and Workplace Practices Committee of the Board of Directors as of December 12, 2023, was made in the form of AB Holding Units. Reporting Person therefore may be deemed to have acquired 136,289 AB Holding Units. These AB Holding Units are held in a rabbi trust under AllianceBernstein's incentive compensation award program until they vest and are delivered to the Reporting Person. The award vests, subject to various agreements and covenants set forth in the applicable award agreement, in equal annual increments on each of December 1, 2024, 2025 and 2026.

SEC source: 0001209191-23-057422 · doc4.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,515.59

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Includes Restricted Stock Units.

SEC source: 0001705584-23-000004 · wk-form4_1701731606.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 256,634

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · shares: On December 1, 2023, 71,510 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 39,546 AB Holding Units were withheld for tax purposes and 31,964 AB Holding Units were delivered to him.

F3 · price: The closing price of an AB Holding Unit for NYSE composite transactions on December 1, 2023.

F2 · balance_after: On December 1, 2023, 71,510 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 39,546 AB Holding Units were withheld for tax purposes and 31,964 AB Holding Units were delivered to him.

SEC source: 0001705584-23-000004 · wk-form4_1701731606.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · by rabbi trust under employee incentive compensation plan

Disclosed balance after: 286,011

F1 · security: Units representing assignments of beneficial ownership of limited partnership interests in AllianceBernstein Holding L.P. ("AB Holding Units")

F2 · shares: On December 1, 2023, 71,510 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 39,546 AB Holding Units were withheld for tax purposes and 31,964 AB Holding Units were delivered to him.

F3 · price: The closing price of an AB Holding Unit for NYSE composite transactions on December 1, 2023.

F2 · balance_after: On December 1, 2023, 71,510 AB Holding Units previously owned by Reporting Person through a rabbi trust under an employee incentive compensation award program were distributed to him. Of these AB Holding Units, 39,546 AB Holding Units were withheld for tax purposes and 31,964 AB Holding Units were delivered to him.

SEC source: 0001209191-23-045887 · doc4.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,359.94

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Includes Restricted Stock Units.

SEC source: 0001209191-23-037079 · doc4.xml · nonDerivative · entry 2

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,182.57

F4 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's 2019 incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs and vest proportionately with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F3 · balance_after: Includes Restricted Stock Units ("RSUs").

SEC source: 0001209191-23-016897 · doc4.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,004.26

F1 · shares: Dividend equivalents accrued on Restricted Stock Units ("RSUs") previously awarded pursuant to Issuer's incentive plan. Dividend equivalents accrue when and as dividends are paid on the common shares underlying the RSUs, and vest proportionally with and are subject to settlement and expiration upon the same terms as the RSUs to which they relate. Dividend equivalents are issued in the form of RSUs, each of which represents a contingent right to receive one share of common stock.

F2 · balance_after: Includes restricted stock units.

SEC source: 0001209191-23-014845 · doc4.xml · nonDerivative · entry 1

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,811

F1 · shares: Shares withheld to cover taxes upon vesting of a previous restricted stock unit grant.

F2 · balance_after: Includes restricted stock units.

SEC source: 0001209191-23-013859 · doc4.xml · nonDerivative · entry 3

BERNSTEIN SETH P · CIK 0001705584 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,020

F4 · shares: Shares withheld to cover taxes upon vesting of the performance shares.

F2 · balance_after: Includes restricted stock units.