Knowles Corp (KN)

Data as of Aug 19, 2026, from SEC Form 4 filings.

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Cheryl L. Shavers - Director
Open-market sale$253K
Aug 17, 2026
Cheryl L. Shavers - Director
Open-market sale$7K
Aug 17, 2026

About Knowles Corp (KN)

Knowles Corp is engaged in the manufacturing of micro-acoustic microphones and balanced armature speakers, audio solutions, high-performance capacitors, and radio frequency filtering products. It operates in two segments; the Precision Devices segment specializes in the design and delivery of high-performance capacitor products and RF solutions; and Medtech & Specialty Audio segment designs and manufactures microphones and balanced armature speakers used in applications. The majority of its revenue comes from the Precision Devices. Geographically, it operates in United States, Asia, Other Americas, Europe and Others, out of which United States generates maximum revenue.

Headquarters: ITASCA, IL
Employees: 5,200
Listed: 2014
Exchange: XNYS
Sector: Information Technology

https://www.knowles.com SEC filings for KN on EDGAR

KN Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	10	259,414	$10.09M

KN insider transactions (Form 4)

63 Form 4 filings on record, the earliest from Nov 6, 2024, newest first. Filing history page 1 of 3.

Date	Insider	Transaction	Security	Shares	Price	Value
Aug 17, 2026	Cheryl L. Shavers - Director	Open-market sale	Common Stock	6,443^{footnote F1}	$39.27	$253K
Aug 17, 2026	Cheryl L. Shavers - Director	Open-market sale	Common Stock	175^{footnote F1}	$39.28	$7K
Footnote F1 (shares): On August 18, 2026, the reporting person filed a Form 4 which inadvertently indicated that the transactions reported were made pursuant to a Rule 10b5-1 trading plan. This amended Form 4 does not report additional transactions, but rather corrects this error.
Aug 17, 2026	Cheryl L. Shavers - Director	Open-market sale	Common Stock	6,443	$39.27	$253K
Aug 17, 2026	Cheryl L. Shavers - Director	Open-market sale	Common Stock	175	$39.28	$7K
Aug 12, 2026	Jeffrey Niew - Officer	Open-market sale	Common Stock	150,000^{footnote F1}	$39.07^{footnote F2}	$5.86M
Aug 13, 2026	Jeffrey Niew - Officer	Open-market sale	Common Stock	43,049^{footnote F1}	$38.69^{footnote F3}	$1.67M
Aug 14, 2026	Jeffrey Niew - Officer	Open-market sale	Common Stock	6,951^{footnote F1}	$38.00	$264K
Footnote 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 May 13, 2026. Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.79 to $39.58, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR Footnote F3 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.00 to $39.17, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Aug 12, 2026	John S. Anderson - Officer	Open-market sale	Common Stock	30,000^{footnote F1}	$39.07^{footnote F2}	$1.17M
Aug 13, 2026	John S. Anderson - Officer	Open-market sale	Common Stock	10,000^{footnote F1}	$38.84^{footnote F3}	$388K
Footnote 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 May 13, 2026. Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.79 to $39.56, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR Footnote F3 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.64 to $39.03, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Jul 27, 2026	Raymond D. Cabrera - Officer	Open-market sale	Common Stock	6,178	$36.28	$224K
May 27, 2026	Daniel J. Giesecke - Officer	Open-market sale	Common Stock	10,189^{footnote F1}	$37.33^{footnote F2}	$380K
May 27, 2026	Daniel J. Giesecke - Officer	Open-market sale	Common Stock	10,012^{footnote F1}	$37.31^{footnote F2}	$374K
Footnote 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 February 25, 2026. Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.00 to $38.19, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
May 13, 2026	Raymond D. Cabrera - Officer	Option exercise	Common Stock	25,210	$16.77	$423K
May 13, 2026	Raymond D. Cabrera - Officer	Option exercise	Non-Qualified Stock Option (right to buy)	25,210	$16.77	$423K
May 13, 2026	Raymond D. Cabrera - Officer	Tax withholding / forfeiture	Common Stock	17,599^{footnote F1}	$36.62	$644K
Footnote F1 (shares): These shares represent the payment of the option exercise price and tax liability by withholding securities.
May 5, 2026	Jeffrey Niew - Officer	Option exercise	Common Stock	142,857	$16.77	$2.40M
May 5, 2026	Jeffrey Niew - Officer	Option exercise	Non-Qualified Stock Option (right to buy)	142,857	$16.77	$2.40M
May 5, 2026	Jeffrey Niew - Officer	Open-market sale	Common Stock	142,857	$33.25^{footnote F1}	$4.75M
Footnote F1 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.01 to $33.55, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Feb 3, 2026	Ye Jane Li - Director	Gift	Common Stock	7,424	$0.00	-
Feb 3, 2026	Ye Jane Li - Director	Gift	Common Stock	7,424^{footnote F2}	$0.00	-
Apr 28, 2026	Ye Jane Li - Director	Grant or award	Common Stock	6,265^{footnote F1}	$30.33	$190K
Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant. Footnote 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.
Apr 28, 2026	Michael S. Wishart - Director	Grant or award	Common Stock	6,265^{footnote F1}	$30.33	$190K
Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.
Apr 28, 2026	Cheryl L. Shavers - Director	Grant or award	Common Stock	6,265^{footnote F1}	$30.33	$190K
Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.
Apr 28, 2026	Daniel J. Crowley - Director	Grant or award	Common Stock	6,265^{footnote F1}	$30.33	$190K
Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.
Apr 28, 2026	Jason M. Cardew - Director	Grant or award	Common Stock	6,265^{footnote F1}	$30.33	$190K
Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.
Apr 28, 2026	Keith Barnes - Director	Grant or award	Common Stock	6,265^{footnote F1}	$30.33	$190K
Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.
Apr 28, 2026	Laura Angelini - Director	Grant or award	Common Stock	6,265^{footnote F1}	$30.33	$190K
Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.
Apr 27, 2026	Air A. Bastarrica Jr. - Officer	Open-market sale	Common Stock	2,262	$30.68	$69K
Apr 28, 2026	Air A. Bastarrica Jr. - Officer	Open-market sale	Common Stock	1,962	$30.26	$59K
Apr 29, 2026	Air A. Bastarrica Jr. - Officer	Open-market sale	Common Stock	2,153	$29.96	$65K
Feb 24, 2026	Robert J. Perna - Officer	Open-market sale	Common Stock	7,422	$28.10^{footnote F1}	$209K
Feb 26, 2026	Robert J. Perna - Officer	Open-market sale	Common Stock	9,221	$27.88^{footnote F2}	$257K
Footnote F1 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.98 to $28.11, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.88 to $27.89, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Feb 10, 2026	Keith Barnes - Director	Gift	Common Stock	41,048	$0.00	-
Feb 10, 2026	Keith Barnes - Director	Gift	Common Stock	41,048	$0.00	-
Feb 19, 2026	Keith Barnes - Director	Open-market sale	Common Stock	41,048	$27.16^{footnote F2}	$1.11M
Footnote F2 (price): The reporting person contributed Knowles Corporation common stock to an exchange fund in exchange for shares of the exchange fund. The Knowles Corporation common stock was valued at $27.16 per share for the purpose of determining the number of shares of the exchange fund… Full note on SEC EDGAR
Feb 20, 2026	Robert J. Perna - Officer	Tax withholding / forfeiture	Common Stock	3,086^{footnote F1}	$27.54	$85K
Footnote 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 20, 2024 in accordance with Rule 16b-3.
Feb 20, 2026	Jeffrey Niew - Officer	Tax withholding / forfeiture	Common Stock	17,456^{footnote F1}	$27.54	$481K
Footnote 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 20, 2024 in accordance with Rule 16b-3.
Feb 20, 2026	Daniel J. Giesecke - Officer	Tax withholding / forfeiture	Common Stock	3,968^{footnote F1}	$27.54	$109K
Footnote 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 20, 2024 in accordance with Rule 16b-3.
Feb 20, 2026	Raymond D. Cabrera - Officer	Tax withholding / forfeiture	Common Stock	3,086^{footnote F1}	$27.54	$85K
Footnote 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 20, 2024 in accordance with Rule 16b-3.
Feb 20, 2026	Air A. Bastarrica Jr. - Officer	Tax withholding / forfeiture	Common Stock	2,347^{footnote F1}	$27.54	$65K
Footnote 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 20, 2024 in accordance with Rule 16b-3.
Feb 20, 2026	John S. Anderson - Officer	Tax withholding / forfeiture	Common Stock	5,731^{footnote F1}	$27.54	$158K
Footnote 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 20, 2024 in accordance with Rule 16b-3.
Feb 20, 2026	Cheryl L. Shavers - Director	Open-market sale	Common Stock	3,700	$27.40^{footnote F1}	$101K
Footnote F1 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.37 to $27.45, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Feb 17, 2026	Robert J. Perna - Officer	Grant or award	Common Stock	34,725^{footnote F1}	$27.14	$942K
Feb 17, 2026	Robert J. Perna - Officer	Tax withholding / forfeiture	Common Stock	15,384^{footnote F2}	$27.14	$418K
Feb 17, 2026	Robert J. Perna - Officer	Grant or award	Common Stock	13,817^{footnote F3}	$0.00	-
Feb 18, 2026	Robert J. Perna - Officer	Tax withholding / forfeiture	Common Stock	2,818^{footnote F4}	$27.16	$77K
Footnote 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… Full note on SEC EDGAR Footnote 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. Footnote 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. Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.
Feb 17, 2026	Jeffrey Niew - Officer	Grant or award	Common Stock	212,814^{footnote F1}	$27.14	$5.78M
Feb 17, 2026	Jeffrey Niew - Officer	Tax withholding / forfeiture	Common Stock	94,277^{footnote F2}	$27.14	$2.56M
Feb 17, 2026	Jeffrey Niew - Officer	Grant or award	Common Stock	72,955^{footnote F3}	$0.00	-
Feb 18, 2026	Jeffrey Niew - Officer	Tax withholding / forfeiture	Common Stock	15,943^{footnote F4}	$27.16	$433K
Footnote 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… Full note on SEC EDGAR Footnote 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. Footnote 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. Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.
Feb 17, 2026	Daniel J. Giesecke - Officer	Grant or award	Common Stock	39,685^{footnote F1}	$27.14	$1.08M
Feb 17, 2026	Daniel J. Giesecke - Officer	Tax withholding / forfeiture	Common Stock	17,581^{footnote F2}	$27.14	$477K
Feb 17, 2026	Daniel J. Giesecke - Officer	Grant or award	Common Stock	16,581^{footnote F3}	$0.00	-
Feb 18, 2026	Daniel J. Giesecke - Officer	Tax withholding / forfeiture	Common Stock	3,624^{footnote F4}	$27.16	$98K
Footnote 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… Full note on SEC EDGAR Footnote 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. Footnote 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. Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.
Feb 17, 2026	Raymond D. Cabrera - Officer	Grant or award	Common Stock	29,764^{footnote F1}	$27.14	$808K
Feb 17, 2026	Raymond D. Cabrera - Officer	Tax withholding / forfeiture	Common Stock	13,184^{footnote F2}	$27.14	$358K
Feb 17, 2026	Raymond D. Cabrera - Officer	Grant or award	Common Stock	13,817^{footnote F3}	$0.00	-
Feb 18, 2026	Raymond D. Cabrera - Officer	Tax withholding / forfeiture	Common Stock	2,818^{footnote F4}	$27.16	$77K
Footnote 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… Full note on SEC EDGAR Footnote 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. Footnote 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. Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.
Feb 17, 2026	Air A. Bastarrica Jr. - Officer	Grant or award	Common Stock	11,054^{footnote F1}	$0.00	-
Feb 18, 2026	Air A. Bastarrica Jr. - Officer	Tax withholding / forfeiture	Common Stock	2,143^{footnote F2}	$27.16	$58K
Footnote 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. Footnote F2 (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 18, 2025 in accordance with Rule 16b-3.

Recent KN Form 8-K filings

Read KN company news

Jul 28, 2026Item 5.07, 9.01

Read the filing on SEC EDGAR

Jul 23, 2026Item 2.02, 9.01

Read the filing on SEC EDGAR

Apr 29, 2026Item 5.07

Read the filing on SEC EDGAR

Apr 23, 2026Item 2.02, 9.01

Read the filing on SEC EDGAR

Recent KN Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Aug 17, 2026	SHAVERS CHERYL L	Director	6,618	$260K	View on EDGAR
Aug 14, 2026	JEFFREY NIEW	Officer, Director	6,951

KN insider trading FAQ

What is the latest insider trade for KN?

Knowles Corp (KN) had 5 insider filings in the last 90 days, with the most recent on 2026-08-19. The full record for KN runs to 63 Form 4 filings, the earliest from 2024-11-06. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying KN stock?

No insider purchases of KN were filed in the last 90 days.

How many insiders are selling KN stock?

10 insider sales of KN were filed in the last 90 days, totaling $10.09M.

Where can I see KN SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects KN Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Information Technology companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Aug 19, 2026 - Cheryl L. Shavers view on EDGAR
Aug 18, 2026 - Cheryl L. Shavers view on EDGAR
Aug 14, 2026 - Jeffrey Niew view on EDGAR
Aug 13, 2026 - John S. Anderson view on EDGAR
Jul 28, 2026 - Raymond D. Cabrera view on EDGAR
May 29, 2026 - Daniel J. Giesecke view on EDGAR
May 14, 2026 - Raymond D. Cabrera view on EDGAR
May 7, 2026 - Jeffrey Niew view on EDGAR
Apr 29, 2026 - Ye Jane Li view on EDGAR

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Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Information Technology: Where KN's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market sale

259,414

$10.09M

Date

Insider

Transaction

Security

Price

Value

Aug 17, 2026

Cheryl L. Shavers - Director

Open-market sale

Common Stock

6,443^{footnote F1}

$39.27

$253K

Aug 17, 2026

Cheryl L. Shavers - Director

Open-market sale

Common Stock

175^{footnote F1}

$39.28

$7K

Footnote F1 (shares): On August 18, 2026, the reporting person filed a Form 4 which inadvertently indicated that the transactions reported were made pursuant to a Rule 10b5-1 trading plan. This amended Form 4 does not report additional transactions, but rather corrects this error.

Aug 17, 2026

Cheryl L. Shavers - Director

Open-market sale

Common Stock

6,443

$39.27

$253K

Aug 17, 2026

Cheryl L. Shavers - Director

Open-market sale

Common Stock

175

$39.28

$7K

Aug 12, 2026

Jeffrey Niew - Officer

Open-market sale

Common Stock

150,000^{footnote F1}

$39.07^{footnote F2}

$5.86M

Aug 13, 2026

Jeffrey Niew - Officer

Open-market sale

Common Stock

43,049^{footnote F1}

$38.69^{footnote F3}

$1.67M

Aug 14, 2026

Jeffrey Niew - Officer

Open-market sale

Common Stock

6,951^{footnote F1}

$38.00

$264K

Footnote 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 May 13, 2026.
Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.79 to $39.58, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.00 to $39.17, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR

Aug 12, 2026

John S. Anderson - Officer

Open-market sale

Common Stock

30,000^{footnote F1}

$39.07^{footnote F2}

$1.17M

Aug 13, 2026

John S. Anderson - Officer

Open-market sale

Common Stock

10,000^{footnote F1}

$38.84^{footnote F3}

$388K

Footnote 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 May 13, 2026.
Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.79 to $39.56, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.64 to $39.03, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR

Jul 27, 2026

Raymond D. Cabrera - Officer

Open-market sale

Common Stock

6,178

$36.28

$224K

May 27, 2026

Daniel J. Giesecke - Officer

Open-market sale

Common Stock

10,189^{footnote F1}

$37.33^{footnote F2}

$380K

May 27, 2026

Daniel J. Giesecke - Officer

Open-market sale

Common Stock

10,012^{footnote F1}

$37.31^{footnote F2}

$374K

Footnote 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 February 25, 2026.
Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.00 to $38.19, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR

May 13, 2026

Raymond D. Cabrera - Officer

Option exercise

Common Stock

25,210

$16.77

$423K

May 13, 2026

Raymond D. Cabrera - Officer

Option exercise

Non-Qualified Stock Option (right to buy)

25,210

$16.77

$423K

May 13, 2026

Raymond D. Cabrera - Officer

Tax withholding / forfeiture

Common Stock

17,599^{footnote F1}

$36.62

$644K

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

May 5, 2026

Jeffrey Niew - Officer

Option exercise

Common Stock

142,857

$16.77

$2.40M

May 5, 2026

Jeffrey Niew - Officer

Option exercise

Non-Qualified Stock Option (right to buy)

142,857

$16.77

$2.40M

May 5, 2026

Jeffrey Niew - Officer

Open-market sale

Common Stock

142,857

$33.25^{footnote F1}

$4.75M

Footnote F1 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.01 to $33.55, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR

Feb 3, 2026

Ye Jane Li - Director

Gift

Common Stock

7,424

$0.00

Feb 3, 2026

Ye Jane Li - Director

Gift

Common Stock

7,424^{footnote F2}

$0.00

Apr 28, 2026

Ye Jane Li - Director

Grant or award

Common Stock

6,265^{footnote F1}

$30.33

$190K

Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.
Footnote 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.

Apr 28, 2026

Michael S. Wishart - Director

Grant or award

Common Stock

6,265^{footnote F1}

$30.33

$190K

Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.

Apr 28, 2026

Cheryl L. Shavers - Director

Grant or award

Common Stock

6,265^{footnote F1}

$30.33

$190K

Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.

Apr 28, 2026

Daniel J. Crowley - Director

Grant or award

Common Stock

6,265^{footnote F1}

$30.33

$190K

Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.

Apr 28, 2026

Jason M. Cardew - Director

Grant or award

Common Stock

6,265^{footnote F1}

$30.33

$190K

Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.

Apr 28, 2026

Keith Barnes - Director

Grant or award

Common Stock

6,265^{footnote F1}

$30.33

$190K

Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.

Apr 28, 2026

Laura Angelini - Director

Grant or award

Common Stock

6,265^{footnote F1}

$30.33

$190K

Footnote F1 (shares): Restricted Stock Units (RSU) awarded as compensation for services as a Director pursuant to the Knowles Corporation 2018 Equity and Cash Incentive Plan. The RSUs will vest on the first anniversary of the grant.

Apr 27, 2026

Air A. Bastarrica Jr. - Officer

Open-market sale

Common Stock

2,262

$30.68

$69K

Apr 28, 2026

Air A. Bastarrica Jr. - Officer

Open-market sale

Common Stock

1,962

$30.26

$59K

Apr 29, 2026

Air A. Bastarrica Jr. - Officer

Open-market sale

Common Stock

2,153

$29.96

$65K

Feb 24, 2026

Robert J. Perna - Officer

Open-market sale

Common Stock

7,422

$28.10^{footnote F1}

$209K

Feb 26, 2026

Robert J. Perna - Officer

Open-market sale

Common Stock

9,221

$27.88^{footnote F2}

$257K

Footnote F1 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.98 to $28.11, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR
Footnote F2 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.88 to $27.89, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR

Feb 10, 2026

Keith Barnes - Director

Gift

Common Stock

41,048

$0.00

Feb 10, 2026

Keith Barnes - Director

Gift

Common Stock

41,048

$0.00

Feb 19, 2026

Keith Barnes - Director

Open-market sale

Common Stock

41,048

$27.16^{footnote F2}

$1.11M

Footnote F2 (price): The reporting person contributed Knowles Corporation common stock to an exchange fund in exchange for shares of the exchange fund. The Knowles Corporation common stock was valued at $27.16 per share for the purpose of determining the number of shares of the exchange fund… Full note on SEC EDGAR

Feb 20, 2026

Robert J. Perna - Officer

Tax withholding / forfeiture

Common Stock

3,086^{footnote F1}

$27.54

$85K

Footnote 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 20, 2024 in accordance with Rule 16b-3.

Feb 20, 2026

Jeffrey Niew - Officer

Tax withholding / forfeiture

Common Stock

17,456^{footnote F1}

$27.54

$481K

Footnote 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 20, 2024 in accordance with Rule 16b-3.

Feb 20, 2026

Daniel J. Giesecke - Officer

Tax withholding / forfeiture

Common Stock

3,968^{footnote F1}

$27.54

$109K

Footnote 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 20, 2024 in accordance with Rule 16b-3.

Feb 20, 2026

Raymond D. Cabrera - Officer

Tax withholding / forfeiture

Common Stock

3,086^{footnote F1}

$27.54

$85K

Footnote 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 20, 2024 in accordance with Rule 16b-3.

Feb 20, 2026

Air A. Bastarrica Jr. - Officer

Tax withholding / forfeiture

Common Stock

2,347^{footnote F1}

$27.54

$65K

Footnote 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 20, 2024 in accordance with Rule 16b-3.

Feb 20, 2026

John S. Anderson - Officer

Tax withholding / forfeiture

Common Stock

5,731^{footnote F1}

$27.54

$158K

Footnote 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 20, 2024 in accordance with Rule 16b-3.

Feb 20, 2026

Cheryl L. Shavers - Director

Open-market sale

Common Stock

3,700

$27.40^{footnote F1}

$101K

Footnote F1 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.37 to $27.45, inclusive. The reporting person undertakes to provide to Knowles Corporation, any security holder of Knowles Corporation, or the… Full note on SEC EDGAR

Feb 17, 2026

Robert J. Perna - Officer

Grant or award

Common Stock

34,725^{footnote F1}

$27.14

$942K

Feb 17, 2026

Robert J. Perna - Officer

Tax withholding / forfeiture

Common Stock

15,384^{footnote F2}

$27.14

$418K

Feb 17, 2026

Robert J. Perna - Officer

Grant or award

Common Stock

13,817^{footnote F3}

$0.00

Feb 18, 2026

Robert J. Perna - Officer

Tax withholding / forfeiture

Common Stock

2,818^{footnote F4}

$27.16

$77K

Footnote 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… Full note on SEC EDGAR
Footnote 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.
Footnote 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.
Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.

Feb 17, 2026

Jeffrey Niew - Officer

Grant or award

Common Stock

212,814^{footnote F1}

$27.14

$5.78M

Feb 17, 2026

Jeffrey Niew - Officer

Tax withholding / forfeiture

Common Stock

94,277^{footnote F2}

$27.14

$2.56M

Feb 17, 2026

Jeffrey Niew - Officer

Grant or award

Common Stock

72,955^{footnote F3}

$0.00

Feb 18, 2026

Jeffrey Niew - Officer

Tax withholding / forfeiture

Common Stock

15,943^{footnote F4}

$27.16

$433K

Footnote 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… Full note on SEC EDGAR
Footnote 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.
Footnote 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.
Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.

Feb 17, 2026

Daniel J. Giesecke - Officer

Grant or award

Common Stock

39,685^{footnote F1}

$27.14

$1.08M

Feb 17, 2026

Daniel J. Giesecke - Officer

Tax withholding / forfeiture

Common Stock

17,581^{footnote F2}

$27.14

$477K

Feb 17, 2026

Daniel J. Giesecke - Officer

Grant or award

Common Stock

16,581^{footnote F3}

$0.00

Feb 18, 2026

Daniel J. Giesecke - Officer

Tax withholding / forfeiture

Common Stock

3,624^{footnote F4}

$27.16

$98K

Footnote 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… Full note on SEC EDGAR
Footnote 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.
Footnote 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.
Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.

Feb 17, 2026

Raymond D. Cabrera - Officer

Grant or award

Common Stock

29,764^{footnote F1}

$27.14

$808K

Feb 17, 2026

Raymond D. Cabrera - Officer

Tax withholding / forfeiture

Common Stock

13,184^{footnote F2}

$27.14

$358K

Feb 17, 2026

Raymond D. Cabrera - Officer

Grant or award

Common Stock

13,817^{footnote F3}

$0.00

Feb 18, 2026

Raymond D. Cabrera - Officer

Tax withholding / forfeiture

Common Stock

2,818^{footnote F4}

$27.16

$77K

Footnote 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… Full note on SEC EDGAR
Footnote 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.
Footnote 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.
Footnote F4 (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 18, 2025 in accordance with Rule 16b-3.

Feb 17, 2026

Air A. Bastarrica Jr. - Officer

Grant or award

Common Stock

11,054^{footnote F1}

$0.00

Feb 18, 2026

Air A. Bastarrica Jr. - Officer

Tax withholding / forfeiture

Common Stock

2,143^{footnote F2}

$27.16

$58K

Footnote 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.
Footnote F2 (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 18, 2025 in accordance with Rule 16b-3.

Filed

Filer

Relationship

Market value

Notice

Aug 17, 2026

SHAVERS CHERYL L

Director

6,618

$260K

View on EDGAR

Aug 14, 2026

JEFFREY NIEW

Officer, Director

6,951