KN

SEC source: 0001535760-26-000005 · edgardoc.xml · nonDerivative · entry 1

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 938,440

F1 · shares: Represents the settlement of performance share units (PSUs) that were previously granted under the Knowles Corporation Equity Incentive Plan. The ultimate amount of shares to be received under the grant depended upon the achievement of performance goals during a three-year performance period from January 1, 2023 through December 31, 2025.

SEC source: 0001598086-26-000002 · edgardoc.xml · nonDerivative · entry 3

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203,648

F3 · shares: Restricted Stock Units granted under the Knowles Corporation 2018 Equity and Cash Incentive Plan that vest ratably over three years commencing on the first anniversary of the award.

SEC source: 0001598086-26-000002 · edgardoc.xml · nonDerivative · entry 2

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 187,067

F2 · shares: These shares represent the payment of the tax liability by withholding securities incident to the settlement of performance share units granted on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001598086-26-000002 · edgardoc.xml · nonDerivative · entry 1

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 204,648

F1 · shares: Represents the settlement of performance share units (PSUs) that were previously granted under the Knowles Corporation Equity Incentive Plan. The ultimate amount of shares to be received under the grant depended upon the achievement of performance goals during a three-year performance period from January 1, 2023 through December 31, 2025.

SEC source: 0001598091-26-000002 · edgardoc.xml · nonDerivative · entry 3

Cabrera Raymond D. · CIK 0001598091 · SVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,416

F3 · shares: Restricted Stock Units granted under the Knowles Corporation 2018 Equity and Cash Incentive Plan that vest ratably over three years commencing on the first anniversary of the award.

SEC source: 0001598091-26-000002 · edgardoc.xml · nonDerivative · entry 2

Cabrera Raymond D. · CIK 0001598091 · SVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,599

F2 · shares: These shares represent the payment of the tax liability by withholding securities incident to the settlement of performance share units granted on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001598091-26-000002 · edgardoc.xml · nonDerivative · entry 1

Cabrera Raymond D. · CIK 0001598091 · SVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,783

F1 · shares: Represents the settlement of performance share units (PSUs) that were previously granted under the Knowles Corporation Equity Incentive Plan. The ultimate amount of shares to be received under the grant depended upon the achievement of performance goals during a three-year performance period from January 1, 2023 through December 31, 2025.

SEC source: 0001745084-26-000003 · edgardoc.xml · nonDerivative · entry 1

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,059

F1 · shares: Restricted Stock Units granted under the Knowles Corporation 2018 Equity and Cash Incentive Plan that vest ratably over three years commencing on the first anniversary of the award.

SEC source: 0001598318-26-000004 · edgardoc.xml · nonDerivative · entry 3

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 245,561

F3 · shares: Restricted Stock Units granted under the Knowles Corporation 2018 Equity and Cash Incentive Plan that vest ratably over three years commencing on the first anniversary of the award.

SEC source: 0001598318-26-000004 · edgardoc.xml · nonDerivative · entry 2

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221,611

F2 · shares: These shares represent the payment of the tax liability by withholding securities incident to the settlement of performance share units granted on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001598318-26-000004 · edgardoc.xml · nonDerivative · entry 1

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 250,180

F1 · shares: Represents the settlement of performance share units (PSUs) that were previously granted under the Knowles Corporation Equity Incentive Plan. The ultimate amount of shares to be received under the grant depended upon the achievement of performance goals during a three-year performance period from January 1, 2023 through December 31, 2025.

SEC source: 0001181355-26-000001 · edgardoc.xml · nonDerivative · entry 2

PERNA ROBERT J · CIK 0001181355 · SVP, General Counsel & Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,440

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.08 to $27.10, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased/sold at each separate price within the ranges set forth in this footnote to this Form 4.

SEC source: 0001598318-26-000003 · edgardoc.xml · nonDerivative · entry 2

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 185,691

SEC source: 0001598318-26-000003 · edgardoc.xml · nonDerivative · entry 1

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,685

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.00 to $27.35, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased/sold at each separate price within the ranges set forth in this footnote to this Form 4.

SEC source: 0001268517-26-000004 · edgardoc.xml · nonDerivative · entry 2

BARNES KEITH · CIK 0001268517 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 41,048

F1 · ownership.nature: On February 10, 2026, reporting person transferred 41,048 shares of Knowles common stock to a family trust of which reporting person is a trustee. The reporting person and members of his immediate family are the sole beneficiaries of the trust.

SEC source: 0001268517-26-000004 · edgardoc.xml · nonDerivative · entry 1

BARNES KEITH · CIK 0001268517 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,034

SEC source: 0001598086-26-000001 · edgardoc.xml · nonDerivative · entry 2

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 164,963

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.22 to $27.23, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased/sold at each separate price within the ranges set forth in this footnote to this Form 4.

SEC source: 0001598091-26-000001 · edgardoc.xml · nonDerivative · entry 2

Cabrera Raymond D. · CIK 0001598091 · SVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,019

SEC source: 0001745084-26-000002 · edgardoc.xml · derivative · entry 8

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 11,924 shares

Expires 2029-02-06

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.

F2 · shares: Options granted under the Knowles Corporation 2018 Equity and Cash Incentive Plan that vest ratably over three years commencing on the first anniversary of the award.

SEC source: 0001745084-26-000002 · edgardoc.xml · derivative · entry 7

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,143 shares

Expires 2028-02-08

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.

F2 · shares: Options granted under the Knowles Corporation 2018 Equity and Cash Incentive Plan that vest ratably over three years commencing on the first anniversary of the award.

SEC source: 0001745084-26-000002 · edgardoc.xml · nonDerivative · entry 6

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,005

F1 · shares: These shares represent the payment of the option exercise price and tax liability by withholding securities.

SEC source: 0001745084-26-000002 · edgardoc.xml · nonDerivative · entry 5

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,963

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.

SEC source: 0001745084-26-000002 · edgardoc.xml · nonDerivative · entry 4

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,820

F1 · shares: These shares represent the payment of the option exercise price and tax liability by withholding securities.

SEC source: 0001745084-26-000002 · edgardoc.xml · nonDerivative · entry 3

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,124

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.

SEC source: 0001745084-26-000002 · edgardoc.xml · nonDerivative · entry 2

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,200

SEC source: 0001745084-26-000002 · edgardoc.xml · nonDerivative · entry 1

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,767

SEC source: 0001535760-26-000003 · edgardoc.xml · nonDerivative · entry 3

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 739,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.00 to $27.04, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased/sold at each separate price within the ranges set forth in this footnote to this Form 4.

SEC source: 0001535760-26-000003 · edgardoc.xml · nonDerivative · entry 2

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 764,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

SEC source: 0001535760-26-000003 · edgardoc.xml · nonDerivative · entry 1

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 789,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

SEC source: 0001181355-26-000001 · edgardoc.xml · nonDerivative · entry 1

PERNA ROBERT J · CIK 0001181355 · SVP, General Counsel & Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,606

F1 · shares: These shares represent the payment of the tax liability by withholding securities incident to the vesting of a restricted stock grant issued on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001535760-26-000004 · edgardoc.xml · nonDerivative · entry 1

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 725,626

F1 · shares: These shares represent the payment of the tax liability by withholding securities incident to the vesting of a restricted stock grant issued on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001598086-26-000001 · edgardoc.xml · nonDerivative · entry 1

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,848

F1 · shares: These shares represent the payment of the tax liability by withholding securities incident to the vesting of a restricted stock grant issued on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001598091-26-000001 · edgardoc.xml · nonDerivative · entry 1

Cabrera Raymond D. · CIK 0001598091 · SVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,019

F1 · shares: These shares represent the payment of the tax liability by withholding securities incident to the vesting of a restricted stock grant issued on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001745084-26-000001 · edgardoc.xml · nonDerivative · entry 1

Bastarrica Air A. Jr. · CIK 0001745084 · Vice President, Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,200

F1 · shares: These shares represent the payment of the tax liability by withholding securities incident to the vesting of a restricted stock grant issued on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001598318-26-000002 · edgardoc.xml · nonDerivative · entry 1

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,691

F1 · shares: These shares represent the payment of the tax liability by withholding securities incident to the vesting of a restricted stock grant issued on February 6, 2023 in accordance with Rule 16b-3.

SEC source: 0001535760-26-000002 · edgardoc.xml · nonDerivative · entry 1

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 814,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

SEC source: 0001667921-26-000001 · edgardoc.xml · nonDerivative · entry 3

Li Ye Jane · CIK 0001667921 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 12,576

F2 · shares: Reporting person transferred shares of Knowles common stock to a Grantor Retained Annuity Trust (GRAT) of which reporting person is trustee. The reporting person and members of her immediate family are the sole beneficiaries of the GRAT.

SEC source: 0001667921-26-000001 · edgardoc.xml · nonDerivative · entry 1

Li Ye Jane · CIK 0001667921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,452

SEC source: 0001598318-26-000001 · edgardoc.xml · nonDerivative · entry 5

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 215,957

F2 · shares: These shares represent the payment of the tax liability by withholding securities incident to the settlement of performance share units granted on February 8, 2021 in accordance with Rule 16b-3.

SEC source: 0001598318-26-000001 · edgardoc.xml · nonDerivative · entry 4

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 217,654

F2 · shares: These shares represent the payment of the tax liability by withholding securities incident to the settlement of performance share units granted on February 8, 2021 in accordance with Rule 16b-3.

SEC source: 0001598318-26-000001 · edgardoc.xml · nonDerivative · entry 3

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 219,351

F2 · shares: These shares represent the payment of the tax liability by withholding securities incident to the settlement of performance share units granted on February 8, 2021 in accordance with Rule 16b-3.

SEC source: 0001598318-26-000001 · edgardoc.xml · nonDerivative · entry 2

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221,048

F2 · shares: These shares represent the payment of the tax liability by withholding securities incident to the settlement of performance share units granted on February 8, 2021 in accordance with Rule 16b-3.

SEC source: 0001598318-26-000001 · edgardoc.xml · nonDerivative · entry 1

Anderson John S. · CIK 0001598318 · Senior Vice President & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 223,255

F1 · shares: Represents the settlement of performance share units (PSUs) that were previously granted under the Knowles Corporation Equity Incentive Plan. The ultimate amount of shares to be received under the grant depended upon the achievement of performance goals during a three-year performance period from January 1, 2021 through December 31, 2023. Mr. Anderson elected to defer the receipt of these shares until January 30, 2026.

SEC source: 0001535760-26-000001 · edgardoc.xml · nonDerivative · entry 2

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 839,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

SEC source: 0001535760-26-000001 · edgardoc.xml · nonDerivative · entry 1

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 864,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

SEC source: 0001598086-25-000002 · edgardoc.xml · derivative · entry 3

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 31,513 shares

Expires 2027-02-09

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.

SEC source: 0001598086-25-000002 · edgardoc.xml · nonDerivative · entry 2

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 184,180

F1 · shares: These shares represent the payment of the option exercise price and tax liability by withholding securities.

SEC source: 0001598086-25-000002 · edgardoc.xml · nonDerivative · entry 1

Giesecke Daniel J. · CIK 0001598086 · Senior Vice President & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,385

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.

SEC source: 0001535760-25-000004 · edgardoc.xml · nonDerivative · entry 1

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 889,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.

SEC source: 0001535760-25-000003 · edgardoc.xml · nonDerivative · entry 1

Niew Jeffrey · CIK 0001535760 · Director · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 914,370

F1 · shares: The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.