# EDGAR Filing Document

**Accession Number:** 0001441683
**File Stem:** 0000950170-25-106817
**Filing Date:** 2025-8
**Character Count:** 20816
**Document Hash:** defffc42c63a3c6cf659dfe1c48b512a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-106817.hdr.sgml**: 20250811

**ACCESSION NUMBER**: 0000950170-25-106817

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250811

**DATE AS OF CHANGE**: 20250811

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** APPIAN CORP
- **CENTRAL INDEX KEY:** 0001441683
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 541956084
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-90007
- **FILM NUMBER:** 251203567

**BUSINESS ADDRESS:**
- **STREET 1:** 7950 JONES BRANCH DRIVE
- **CITY:** MCLEAN
- **STATE:** VA
- **ZIP:** 22102
- **BUSINESS PHONE:** 703-442-8844

**MAIL ADDRESS:**
- **STREET 1:** 7950 JONES BRANCH DRIVE
- **CITY:** MCLEAN
- **STATE:** VA
- **ZIP:** 22102
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Abdiel Qualified Master Fund LP
- **CENTRAL INDEX KEY:** 0001508239

**ORGANIZATION NAME:**
- **EIN:** 208096029
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 90 PARK AVENUE, 29TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10016
- **BUSINESS PHONE:** 646-496-9351

**MAIL ADDRESS:**
- **STREET 1:** 90 PARK AVENUE, 29TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10016

### Attached PDF Documents

**Attachment 1:** `ck0000000000-ex99_a.pdf`

_No text found in this document._

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 52)**

**Appian Corporation**

*(Name of Issuer)*

**Class A Common Stock, $0.0001 par value**

*(Title of Class of Securities)*

**03782L101**

*(CUSIP Number)*

**Abdiel Capital**<br>90 Park Avenue, 29th Floor<br>Attn: Colin T. Moran<br>New York NY 10016<br>(646) 496-9202

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**08/07/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **03782L101** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Abdiel Qualified Master Fund, LP** | Name of reporting person<br>**Abdiel Qualified Master Fund, LP** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**CAYMAN ISLANDS** | Citizenship or place of organization<br>**CAYMAN ISLANDS** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**4041102.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**4041102.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4041102.00** | Aggregate amount beneficially owned by each reporting person<br>**4041102.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**9.4%** | Percent of class represented by amount in Row (11)<br>**9.4%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **03782L101** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Abdiel Capital, LP** | Name of reporting person<br>**Abdiel Capital, LP** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**193915.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**193915.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**193915.00** | Aggregate amount beneficially owned by each reporting person<br>**193915.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.5%** | Percent of class represented by amount in Row (11)<br>**0.5%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **03782L101** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Abdiel Partners, LLC** | Name of reporting person<br>**Abdiel Partners, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**5217.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**5217.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5217.00** | Aggregate amount beneficially owned by each reporting person<br>**5217.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.0%** | Percent of class represented by amount in Row (11)<br>**0.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

| **CUSIP No.** | **03782L101** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Abdiel Capital Management, LLC** | Name of reporting person<br>**Abdiel Capital Management, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**4235017.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**4235017.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4235017.00** | Aggregate amount beneficially owned by each reporting person<br>**4235017.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**9.9%** | Percent of class represented by amount in Row (11)<br>**9.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Rows 8, 10 and 11. Consists of 4,041,102 shares of Class A Common Stock held by Abdiel Qualified Master Fund, LP and 193,915 shares of Class A Common Stock held by Abdiel Capital, LP.

| **CUSIP No.** | **03782L101** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Abdiel Capital Advisors, LP** | Name of reporting person<br>**Abdiel Capital Advisors, LP** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**4240234.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**4240234.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4240234.00** | Aggregate amount beneficially owned by each reporting person<br>**4240234.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**9.9%** | Percent of class represented by amount in Row (11)<br>**9.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Rows 8, 10 and 11. Consists of 4,041,102 shares of Class A Common Stock held by Abdiel Qualified Master Fund, LP, 193,915 shares of Class A Common Stock held by Abdiel Capital, LP. and 5,217 shares of Class A Common Stock held by Abdiel Partners, LLC.

| **CUSIP No.** | **03782L101** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Colin T. Moran** | Name of reporting person<br>**Colin T. Moran** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**4240234.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**4240234.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4240234.00** | Aggregate amount beneficially owned by each reporting person<br>**4240234.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**9.9%** | Percent of class represented by amount in Row (11)<br>**9.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Rows 8, 10 and 11. Consists of 4,041,102 shares of Class A Common Stock held by Abdiel Qualified Master Fund, LP, 193,915 shares of Class A Common Stock held by Abdiel Capital, LP. and 5,217 shares of Class A Common Stock held by Abdiel Partners, LLC.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class A Common Stock, $0.0001 par value

**(b) Name of Issuer:**
Appian Corporation

**(c) Address of Issuer's Principal Executive Offices:**
7950 Jones Branch Drive, McLean, VA, 22102

Reference is hereby made to the statement on Schedule 13D filed with the Securities and Exchange Commission by the Reporting Persons with respect to the Class A Common Stock of the Issuer on June 12, 2017, Amendment No. 1 thereto on June 27, 2017, Amendment No. 2 thereto on June 29, 2017, Amendment No. 3 thereto on July 3, 2017, Amendment No. 4 thereto on July 7, 2017, Amendment No. 5 thereto on July 12, 2017, Amendment No. 6 thereto on July 31, 2017, Amendment No. 7 thereto on October 26, 2017, Amendment No. 8 thereto on November 20, 2017, Amendment No. 9 thereto on November 30, 2017, Amendment No. 10 thereto on December 12, 2017, Amendment No. 11 thereto on December 15, 2017, Amendment No. 12 thereto on February 23, 2018, Amendment No. 13 thereto on March 20, 2018, Amendment No. 14 thereto on March 27, 2018, Amendment No. 15 thereto on April 25, 2018, Amendment No. 16 thereto on April 30, 2018, Amendment No. 17 thereto on August 3, 2018, Amendment No. 18 thereto on August 24, 2018, Amendment No. 19 thereto on October 5, 2018, Amendment No. 20 thereto on October 15, 2018, Amendment No. 21 thereto on October 31, 2018, Amendment No. 22 thereto on November 2, 2018, Amendment No. 23 thereto on December 17, 2018, Amendment No. 24 thereto on February 22, 2019, Amendment No. 25 thereto on September 9, 2019, Amendment No. 26 thereto on December 3, 2020, Amendment No. 27 thereto on February 1, 2021, Amendment No. 28 thereto on May 5, 2022, Amendment No. 29 thereto on May 9, 2022, Amendment No. 30 thereto on May 11, 2022, Amendment No. 31 thereto on May 25, 2022, Amendment No. 32 thereto on November 14, 2022, Amendment No. 33 thereto on January 19, 2023, Amendment No. 34 thereto on January 26, 2023, Amendment No. 35 thereto on October 6, 2023, Amendment No. 36 thereto on November 9, 2023, Amendment No. 37 thereto on December 14, 2023, Amendment No. 38 thereto on February 23, 2024, Amendment No. 39 thereto on July 9, 2024, Amendment No. 40 thereto on July 12, 2024, Amendment No. 41 thereto on July 24, 2024, Amendment No. 42 thereto on August 2, 2024, Amendment No. 43 thereto on August 15, 2024, Amendment No. 44 thereto on August 26, 2024, Amemndment No. 45 thereto on April 15, 2025, Amendment No. 46 thereto on May 20, 2025, Amendment No. 47 thereto on June 3, 2025, Amendment No. 48 thereto on June 10, 2025, Amendment No. 49 thereto on July 9, 2025, Amendment No. 50 thereto filed on July 22, 2025 and Amendment No. 51 thereto filed on July 25, 2025 (as so amended, the "Schedule 13D").  This Amendment No. 52 thereto supplements and amends the statement on Schedule 13D.  Terms defined in the Schedule 13D are used herein as so defined.

**Item 4. Purpose of Transaction**

Not Applicable

**Item 5. Interest in Securities of the Issuer**

**(a)**
The information requested by this paragraph is incorporated herein by reference to the cover pages to this Amendment No. 52 to Schedule 13D.  Percentage ownership is based on 42,943,872 shares of Class A Common Stock outstanding as of August 4, 2025, as reported in the Issuer's Report on Form 10-Q for the period ended June 30, 2025 filed with the Securities and Exchange Commission on August 7, 2025.

**(b)**
The information requested by this paragraph is incorporated herein by reference to the cover pages to this Amendment No. 52 to Schedule 13D.

**(c)**
Information with respect to all transactions in the Class A Common Stock effected by the Reporting Persons since the filing of Amendment No. 51 to Schedule 13D is incorporated herein by reference to Exhibit A hereto.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

Not Applicable

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Abdiel Qualified Master Fund, LP

**Signature:** /s/ Colin T. Moran

**Name/Title:** Colin T. Moran, Managing Member of Abdiel Capital Management, LLC, its General Partner

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Abdiel Capital, LP

**Signature:** /s/ Colin T. Moran

**Name/Title:** Colin T. Moran, Managing Member of Abdiel Capital Management, LLC, its General Partner

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Abdiel Partners, LLC

**Signature:** /s/ Colin T. Moran

**Name/Title:** Colin T. Moran, Managing Member of Abdiel Capital Partners, LLC, its Managing Member

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Abdiel Capital Management, LLC

**Signature:** /s/ Colin T. Moran

**Name/Title:** Colin T. Moran, Managing Member

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Abdiel Capital Advisors, LP

**Signature:** /s/ Colin T. Moran

**Name/Title:** Colin T. Moran, Managing Member of Abdiel Capital Partners, LLC, its General Partner

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Colin T. Moran

**Signature:** /s/ Colin T. Moran

**Name/Title:** Colin T. Moran, individually

**Date:** 08/11/2025