Kaiser Aluminum Insider Tiffany Blain Files Proposed Stock Sale

TL;DR

**Kaiser Aluminum insider Tiffany Blain is planning to sell shares.**

AI Summary

Tiffany Blain, an insider at Kaiser Aluminum Corp (KAISER ALUMINUM CORP), has filed a Form 144 on March 23, 2026, indicating a proposed sale of securities. While the specific number of shares or dollar amount is not detailed in this summary filing, it signals an intent to sell. This matters to shareholders because insider selling can sometimes suggest that those closest to the company believe the stock may be fully valued or that they are diversifying their personal holdings, which could be interpreted negatively by the market.

Why It Matters

Insider selling, even if for personal reasons, can sometimes be perceived as a lack of confidence in the company's future prospects, potentially putting downward pressure on the stock price.

Risk Assessment

Risk Level: medium — Insider selling introduces uncertainty, as it could signal a lack of confidence, but without specific details on the quantity or value, the immediate impact is unclear.

Analyst Insight

A smart investor would monitor subsequent filings (like Form 4) to determine the actual number of shares sold by Tiffany Blain and consider if this sale is part of a pre-planned trading arrangement or a reaction to new information.

Key Players & Entities

• Tiffany Blain (person) — Reporting person, insider at Kaiser Aluminum Corp
• Kaiser Aluminum Corp (company) — Subject company whose securities are proposed to be sold
• 0001323719 (person) — CIK for Tiffany Blain
• 0000811596 (company) — CIK for Kaiser Aluminum Corp

Forward-Looking Statements

• The market may react negatively to the news of insider selling, potentially causing a slight dip in Kaiser Aluminum Corp's stock price. (Kaiser Aluminum Corp) — medium confidence, target: 2026-03-24

FAQ

Filing Documents

• primary_doc.html (144)
• primary_doc.xml (144) — 4KB
• 0001969223-26-000385.txt ( ) — 6KB

From the Filing

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 Is this a LIVE or TEST Filing? LIVE TEST Submission Contact Information Name Phone E-Mail Address 144: Issuer Information Name of Issuer Kaiser Aluminum Address of Issuer 1550 West McEwen Drive Suite 500 Franklin TENNESSEE 37067 Phone (629) 252-7040 Name of Person for Whose Account the Securities are To Be Sold Blain Tiffany 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 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 UBS Financial Services Inc 1000 Harbor Blvd 3rd Floor Weehawken � NJ � 07086 7111 797415.9 16210443 03/23/2026 NASDAQ 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 03/05/2026 RSU Kaiser Aluminum 1848 03/23/2026 cash common 03/05/2026 PSA Kaiser Aluminum 4069 03/23/2026 cash common 03/05/2026 RSU Kaiser Aluminum 1194 03/23/2026 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 Kaiser Aluminum 1550 West McEwen Drive Suite 500 Franklin � TN � 37067 common 02/23/2026 15231 1875645 144: Remarks and Signature Remarks Date of Notice 03/23/2026 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/Mijo Suric, for UBS Financial Services Inc, as attorney-in-fact for Blain Tiffany ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

View Full Filing

View this 144 filing on SEC EDGAR