Aclaris (ACRS) R&D Day Oct 14; Exhibit 99.1 furnished

Aclaris Therapeutics will host an in-person and virtual R&D Day on October 14, 2025 at 8:00 a.m. ET, with a live webcast available on the Investors Events page.

Accepted by SEC EDGAR 10/14/2025 - 06:59 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Aclaris Therapeutics will host an in-person and virtual R&D Day on October 14, 2025 at 8:00 a.m. ET, with a live webcast available on the Investors Events page. The accompanying company presentation is furnished as Exhibit 99.1 under Item 7.01 (Regulation FD Disclosure). The information in Item 7.01 and Exhibit 99.1 is not deemed “filed” under the Exchange Act or Securities Act, except if expressly incorporated by reference.

8-K Event Classification

2 items: 7.01, 9.01

2 items

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

FAQ

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

What did Aclaris Therapeutics (ACRS) announce in this 8-K?

Aclaris will host an in-person and virtual R&D Day on October 14, 2025 at 8:00 a.m. ET with a webcast.

How can I access Aclaris (ACRS) R&D Day?

A live webcast will be available via the Events page of the Investors section of the company’s website.

Which exhibit was furnished with the ACRS 8-K?

The company presentation was furnished as Exhibit 99.1.

Is the R&D Day information considered 'filed' with the SEC?

No. Item 7.01 and Exhibit 99.1 are not deemed filed under the Exchange Act or Securities Act, unless expressly incorporated by reference.

Which item of the 8-K covers this disclosure for ACRS?

The disclosure is under Item 7.01: Regulation FD Disclosure.

What is Aclaris Therapeutics' trading symbol and exchange?

The common stock trades as ACRS on The Nasdaq Stock Market, LLC.

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

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d) of

The Securities Exchange Act of 1934

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Date of Report (Date of earliest event reported): October 14, 2025

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Aclaris Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

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Delaware	​	001-37581	​	46-0571712
(State or other jurisdiction of incorporation)	​	(Commission File Number)	​	(IRS Employer Identification No.)

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701 Lee Road, Suite 103

Wayne, PA 19087

(Address of principal executive offices, including zip code)

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(484) 324-7933

(Registrant’s telephone number, including area code)

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N/A

(Former name or former address, if changed since last report)

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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Securities registered pursuant to Section 12(b) of the Act: 

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Title of Each Class:		Trading Symbol(s)		Name of Each Exchange on which Registered
Common Stock, $0.00001 par value		ACRS		The Nasdaq Stock Market, LLC

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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Emerging growth company ☐

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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 13(a) of the Exchange Act. ☐

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Item 7.01 Regulation FD Disclosure.

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On October 14, 2025 at 8:00 a.m. ET, Aclaris Therapeutics, Inc. (the “Registrant”) will hold an in-person and virtual R&D Day. A webcast of the R&D Day will be available through the Events page of the Investors section of the Registrant’s website.  A copy of the presentation that will accompany the R&D Day is furnished herewith as Exhibit 99.1 to this Current Report on Form 8-K.

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In accordance with General Instruction B.2. of Form 8-K, the information in this Item 7.01 and Exhibit 99.1 hereto shall not be deemed “filed” for purposes of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any of the Registrant’s filings under the Securities Act of 1933, as amended, or under the Exchange Act, whether made before or after the date hereof, regardless of any incorporation language in such a filing, except as expressly set forth by specific reference in such a filing.

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Item 9.01 Financial Statements and Exhibits.

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(d) Exhibits

Exhibit
Number		Exhibit Description
99.1	​	Company Presentation.
104		The cover page from Aclaris Therapeutics, Inc.’s Form 8-K filed on October 14, 2025, formatted in Inline XBRL.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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​	​	ACLARIS THERAPEUTICS, INC.
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​	By:	/s/ Kevin Balthaser
Date: October 14, 2025	​	Kevin Balthaser
​	​	Chief Financial Officer

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