[144] Workday, Inc. SEC Filing

Rhea-AI Filing Summary

David A. Duffield Trust U/T/A 7/14/88 filed a Form 144 through Morgan Stanley Smith Barney LLC reporting proposed sales of Common stock under 10b5-1 plans. The filing lists multiple 10b5-1 sale entries, including 107,500 shares on 03/10/2026 for $15,284,231.75 and 107,500 shares on 03/05/2026 for $15,819,248.50.

Other listed transactions include 107,500 shares on 03/02/2026 for $14,447,903.25, 82,884 shares on 01/08/2026 for $17,385,200.81, and earlier December and January 2025–2026 entries with share counts of 80,279 and 81,479 and their corresponding proceeds.

Insights

Securities Compliance Counsel

Notice of multiple 10b5-1 sales by an affiliate; standard reporting item.

The filing lists proposed sales by the David A. Duffield Trust U/T/A 7/14/88 through Morgan Stanley Smith Barney LLC under 10b5-1 plans, with specific trade dates and gross proceeds per entry shown.

Cash‑flow treatment and aggregate remaining holdings are not stated in the excerpt; subsequent SEC filings or Form 4s would disclose post‑transaction positions if required.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	107500	14420050.00	210000000	03/13/2026	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	12/27/2007	Private Placement	Issuer			107500	12/27/2007	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
10b5-1 Sales for DAVID A DUFFIELD TRUST U/T/A 7/14/88 6110 Stoneridge Mall Road Pleasanton CA 94588	Common	03/10/2026	107500	15284231.75
10b5-1 Sales for DAVID A DUFFIELD TRUST U/T/A 7/14/88 6110 Stoneridge Mall Road Pleasanton CA 94588	Common	03/05/2026	107500	15819248.50
10b5-1 Sales for DAVID A DUFFIELD TRUST U/T/A 7/14/88 6110 Stoneridge Mall Road Pleasanton CA 94588	Common	03/02/2026	107500	14447903.25
10b5-1 Sales for DAVID A DUFFIELD TRUST U/T/A 7/14/88 6110 Stoneridge Mall Road Pleasanton CA 94588	Common	01/08/2026	82884	17385200.81
10b5-1 Sales for DAVID A DUFFIELD TRUST U/T/A 7/14/88 6110 Stoneridge Mall Road Pleasanton CA 94588	Common	01/02/2026	81479	16727043.90
10b5-1 Sales for DAVID A DUFFIELD TRUST U/T/A 7/14/88 6110 Stoneridge Mall Road Pleasanton CA 94588	Common	12/23/2025	80279	17262987.43
10b5-1 Sales for DAVID A DUFFIELD TRUST U/T/A 7/14/88 6110 Stoneridge Mall Road Pleasanton CA 94588	Common	12/16/2025	81434	17588335.19

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)