KN: Notice to Sell 142,857 Shares via Option

Morgan Stanley Smith Barney LLC Executive Financial Services submitted a Form 144 reporting a proposed sale of 142,857 shares of Common Stock on 05/05/2026 related to a Stock Option Exercise for cash.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC Executive Financial Services submitted a Form 144 reporting a proposed sale of 142,857 shares of Common Stock on 05/05/2026 related to a Stock Option Exercise for cash. The filing names NYSE as the market. The notice also records a prior sale by Jeffrey S. Niew of 75,000 shares on 02/06/2026 for $1,987,502.50.

Key Figures

Shares to be sold: 142,857 shares Associated numeric value: $4,750,152.39 Prior sale by reporting person: 75,000 shares +1 more

4 metrics

Shares to be sold 142,857 shares scheduled 05/05/2026

Associated numeric value $4,750,152.39 listed alongside 142,857 and 05/05/2026

Prior sale by reporting person 75,000 shares sold 02/06/2026 for $1,987,502.50

Proceeds reported for prior sale $1,987,502.50 Jeffrey S. Niew sale on 02/06/2026

Key Terms

Form 144, Stock Option Exercise, Issuer

3 terms

Form 144 regulatory

"Securities To Be Sold | Common | 05/05/2026 | Stock Option Exercise"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Securities To Be Sold | 05/05/2026 | Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Issuer regulatory

"Securities To Be Sold | Stock Option Exercise | Issuer"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does KN's Form 144 report?

It reports a proposed sale of 142,857 shares on 05/05/2026. The filing lists the sale as a Stock Option Exercise to be effected for cash through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE.

Who previously sold shares in the past three months for KN?

Jeffrey S. Niew sold 75,000 shares on 02/06/2026. The filing shows the transaction amount as $1,987,502.50 for that sale, listed under "Securities Sold During The Past 3 Months."

What is the dollar amount associated with the 142,857 shares in the filing?

The filing shows a numeric value of $4,750,152.39 listed with the 142,857 shares. The entry appears alongside the shares and the date 05/05/2026 in the securities information section.

Through which broker is the KN transaction listed?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services. The filing includes the broker's address at 1 New York Plaza, 8th Floor, New York, NY 10004 in the securities information.

What type of transaction is noted for the 05/05/2026 sale?

The transaction type is a Stock Option Exercise. The filing explicitly labels the 05/05/2026 securities-to-be-sold entry as "Stock Option Exercise" and indicates cash as the method.

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

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Accepted by SEC EDGAR 05/05/2026 - 05:04 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001535760
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	KNOWLES CORPORATION
SEC File Number	001-36102
Address of Issuer	1151 Maplewood Drive, Itasca ILLINOIS 60143
Phone	(630) 250-5100
Name of Person for Whose Account the Securities are To Be Sold	JEFFREY S NIEW
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	142857	4750152.39	85560660	05/05/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/05/2026	Stock Option Exercise	Issuer			142857	05/05/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
JEFFREY S NIEW 1151 Maplewood Drive, Itasca IL 60143	Common	02/06/2026	75000	1987502.50

144: Remarks and Signature

Remarks
Date of Notice	05/05/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jeffrey S. Niew
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)