Appian CEO Calkins proposes $1.68M share sale

Calkins's recent-sale history lists 45,000 shares sold on August 7 and another 45,000 on September 8, 2026.

Rhea-AI Filing Summary

Appian Corporation (APPN) notice reports that Matthew W. Calkins, its CEO and President and a 10% owner, proposes to sell 45,000 Class A common shares through J.P. Morgan Securities LLC, with an approximate sale date of October 7, 2026. The shares are listed as acquired through a stock option exercise from the issuer on January 4, 2022, for cash.

Key Figures

Proposed sale: 45,000 shares Aggregate market value: $1,676,250 Shares outstanding: 40,540,212 shares +2 more

5 metrics

Proposed sale 45,000 shares Class A common stock; approximate sale date October 7, 2026

Aggregate market value $1,676,250 Proposed sale

Shares outstanding 40,540,212 shares Appian shares listed alongside the proposed sale

Prior sale 45,000 shares August 7, 2026

Prior sale 45,000 shares September 8, 2026

Key Terms

Rule 144, Stock Option Exercise, 10% Owner

3 terms

Rule 144 regulatory

"definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Stock Option Exercise financial

"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.

10% Owner regulatory

"CEO and President 10% Owner"

FAQ

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

How many APPN shares is Matthew W. Calkins proposing to sell?

Matthew W. Calkins proposes to sell 45,000 shares of Appian Class A common stock, with an approximate sale date of October 7, 2026. The notice lists an aggregate market value of $1,676,250 and names J.P. Morgan Securities LLC as the broker.

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

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Available on EDGAR 10/07/2026 - 04:34 PM Accepted by SEC EDGAR 10/07/2026 - 04:33 PM 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	0001309192
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	Appian Corporation
SEC File Number	001-38098
Address of Issuer	7950 Jones Branch Drive McLean, VIRGINIA 22102
Phone	703-442-8844
Name of Person for Whose Account the Securities are To Be Sold	Matthew W. Calkins
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	CEO and President
Relationship to Issuer	10% Owner

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
Class A Common Stock	J.P. Morgan Securities LLC 270 Park Avenue, 10th Floor New York NY 10017	45000	1676250	40540212	10/07/2026	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 *
Class A Common Stock	01/04/2022	Stock Option Exercise	Issuer			45000	01/04/2022	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
Matthew W. Calkins C/o Appian Corporation 7950 Jones Branch Drive McLean VA 22102	Class A Common Stock	08/07/2026	45000	1550493
Matthew W. Calkins C/o Appian Corporation 7950 Jones Branch Drive McLean VA 22102	Class A Common Stock	09/08/2026	45000	1583667

144: Remarks and Signature

Remarks
Date of Notice	10/07/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/05/2026
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/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Matthew W. Calkins
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)