Appian (APPN) CEO Calkins sells 50,000 shares under Rule 10b5-1 plan

Rhea-AI Filing Summary

Appian Corp CEO Matthew W. Calkins reported an open-market sale of 50,000 shares of Class A Common Stock on June 8, 2026. The shares were sold at a weighted average price of $24.13 per share, in multiple trades ranging from $23.81 to $24.24.

The transaction was executed automatically under a Rule 10b5-1 trading plan adopted by Calkins on March 5, 2026. Following this sale, he directly owns 1,769,144 shares of Appian common stock.

Insights

Equity ownership and governance analyst

CEO’s 50,000-share 10b5-1 sale is modest relative to his remaining stake.

Matthew W. Calkins, Appian’s CEO, president and a more-than-10% owner, completed an open-market sale of 50,000 shares at a weighted average of $24.13. The trade occurred across a price range of $23.81–$24.24.

The filing states this sale was made automatically under a Rule 10b5-1 trading plan, indicating it was pre-arranged rather than opportunistic. After the sale, Calkins still holds 1,769,144 shares directly, so the transaction represents a relatively small portion of his visible position.

Insider Trade Summary 10b5-1

Net Seller: 50,000 shares ($1,206,500)

Net Sell 1 txn

Insider Calkins Matthew W

Role CEO and President

Sold 50,000 shs ($1.21M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	50,000	$24.13	$1.21M

Holdings After Transaction: Class A Common Stock — 1,769,144 shares (Direct, null)

Footnotes (1)

1. Represents sales that occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.81 to $24.24, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Key Figures

Shares sold: 50,000 shares Weighted average sale price: $24.13 per share Post-transaction holdings: 1,769,144 shares +1 more

4 metrics

Shares sold 50,000 shares Class A Common Stock sold on June 8, 2026

Weighted average sale price $24.13 per share Open-market sale on June 8, 2026

Post-transaction holdings 1,769,144 shares Shares directly owned after sale

Sale price range $23.81–$24.24 per share Multiple transactions within this range

Key Terms

Rule 10b5-1 trading plan, weighted average price, open-market sale

3 terms

Rule 10b5-1 trading plan regulatory

"sales that occurred automatically pursuant to a Rule 10b5-1 trading plan adopted"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Calkins Matthew W

(Last) (First) (Middle)

7950 JONES BRANCH DRIVE

(Street)

MCLEAN VIRGINIA 22102

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
APPIAN CORP [ APPN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	06/08/2026		S(1)		50,000	D	$24.13(2)	1,769,144	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents sales that occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.81 to $24.24, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

	/s/ Angela Patterson, Attorney-in-Fact	06/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Appian (APPN) CEO Matthew Calkins report in this Form 4?

He reported an open-market sale of 50,000 shares of Appian Class A Common Stock. The sale was executed on June 8, 2026 at a weighted average price of $24.13 per share, under a pre-arranged Rule 10b5-1 trading plan.

How many Appian (APPN) shares did the CEO sell and at what prices?

Matthew Calkins sold 50,000 shares of Appian Class A Common Stock at a weighted average price of $24.13. The filing notes multiple trades within a price range from $23.81 to $24.24 per share, producing the reported weighted average figure.

How many Appian (APPN) shares does the CEO hold after this transaction?

After the reported sale, Matthew Calkins directly owns 1,769,144 shares of Appian Class A Common Stock. This remaining stake shows that the 50,000-share transaction is small relative to his overall holdings as disclosed in the Form 4 filing.

Was the Appian (APPN) CEO’s stock sale made under a Rule 10b5-1 plan?

Yes. The filing states the sales occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by Matthew Calkins on March 5, 2026. Such plans are pre-arranged programs to sell shares according to preset conditions, reducing timing discretion.

What type of transaction is reported for Appian (APPN) CEO Matthew Calkins?

The Form 4 reports an open-market sale of non-derivative Class A Common Stock, coded as transaction type “S.” It is classified as a direct ownership transaction, with Calkins listed as both CEO and president and a more-than-10% beneficial owner.