# EDGAR Filing Document

**Accession Number:** 0001013237
**File Stem:** 0000950157-25-000700
**Filing Date:** 2025-8
**Character Count:** 5548
**Document Hash:** 2e94083cb0c244a7fc90960c8a5a0ec9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950157-25-000700.hdr.sgml**: 20250822

**ACCESSION NUMBER**: 0000950157-25-000700

**CONFORMED SUBMISSION TYPE**: S-8 POS

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250822

**DATE AS OF CHANGE**: 20250822

**EFFECTIVENESS DATE**: 20250822

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FACTSET RESEARCH SYSTEMS INC
- **CENTRAL INDEX KEY:** 0001013237
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 133362547
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0831

**FILING VALUES:**
- **FORM TYPE:** S-8 POS
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-201498
- **FILM NUMBER:** 251246307

**BUSINESS ADDRESS:**
- **STREET 1:** 45 GLOVER AVENUE
- **CITY:** NORWALK
- **STATE:** CT
- **ZIP:** 06850
- **BUSINESS PHONE:** 2038101000

**MAIL ADDRESS:**
- **STREET 1:** 45 GLOVER AVENUE
- **CITY:** NORWALK
- **STATE:** CT
- **ZIP:** 06850

#### As filed with the Securities and Exchange Commission on August 22, 2025

#### Registration Statement File No. 333-201498

#### <br>

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

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### POST-EFFECTIVE AMENDMENT NO. 1

### TO

### FORM S-8 REGISTRATION STATEMENT (No. 333-201498)

#### UNDER

#### THE SECURITIES ACT OF 1933

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### FactSet Research Systems Inc.
*(Exact name of registrant as specified in its charter)*

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| | |
|:---|:---|
| **Delaware**<br> (State or other jurisdiction of<br> incorporation or organization) | **13-3362547**<br> (I.R.S. Employer<br> Identification No.) |
| <br> **45 Glover Avenue, Norwalk, Connecticut**<br> (Address of Principal Executive Offices) | <br> **06850**<br> (Zip Code) |

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#### FactSet Research Systems Inc. 2008 Employee Stock Purchase Plan

#### As Amended and Restated
(Full title of the plans)

#### Christopher McLoughlin

#### Executive Vice President, Chief Legal Officer

#### FactSet Research Systems Inc.

#### 45 Glover Avenue

#### Norwalk, Connecticut, 06850
(Name and address of agent for service)

(203) 810-1000

(Telephone number, including area code, of agent for service)

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Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer", "accelerated filer", "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the US Securities Exchange Act of 1934, as amended (the "***Exchange Act***").

Large accelerated filer ☒ Accelerated filer ☐ Non-accelerated filer ☐ <br> Smaller reporting company ☐ Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the US Securities Act of 1933, as amended (the "***Securities Act***"). ☐

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#### <br>

#### EXPLANATORY NOTE

#### DEREGISTRATION OF SECURITIES

FactSet Research Systems Inc. (the "Registrant") is filing this post-effective amendment (this "Post-Effective Amendment") to deregister certain securities originally registered pursuant to the registration statement on Form S-8 (Commission File No. 333-201498) filed with the U.S. Securities and Exchange Commission on January 14, 2015 (the "Prior Registration Statement") with respect to 500,000 shares of common stock, $0.01 par value, of the Registrant ("Common Stock") registered for issuance under the Amended and Restated FactSet Research Systems Inc. 2008 Employee Stock Purchase Plan (the "2008 ESPP").

On June 17, 2025, the Registrant's Board of Directors approved the FactSet Research Systems Inc. 2025 Employee Stock Purchase Plan (the "2025 ESPP") authorizing the issuance of up to 500,000 shares of Common Stock to eligible participants under the 2025 ESPP, effective as of September 1, 2025. Following the approval of the 2025 ESPP by the Registrant's Board of Directors, the Registrant filed on July 31, 2025 the registration statement on Form S-8 (Commission File No. 333-289143) to register 500,000 shares of Common Stock issuable to eligible participants under the 2025 ESPP. As a result, no additional shares of Common Stock will be issued under the Prior Registration Statement. The Registrant is filing this Post-Effective Amendment to remove from registration any and all shares of Common Stock registered but unsold or otherwise unissued under the Prior Registration Statement as of the date hereof.

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#### <br>

#### SIGNATURES

Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing an amendment on Form S-8 and has duly caused this Post-Effective Amendment to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Norwalk, Connecticut, on this 22nd day of August, 2025.

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| | | |
|:---|:---|:---|
| **FACTSET RESEARCH SYSTEMS INC.** | **FACTSET RESEARCH SYSTEMS INC.** | **FACTSET RESEARCH SYSTEMS INC.** |
| By:  | /s/ HELEN L. SHAN | /s/ HELEN L. SHAN |
|  | Name: | Helen L. Shan |
|  | Title: | Executive Vice President, Chief Financial Officer |

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No other person is required to sign this Post-Effective Amendment in reliance upon Rule 478 under the Securities Act.