Company: KROS
Filing Date: 2025-02-26
Form Type: S-8
Source: 0001664710-25-000020
Chunk: 2

Company: Keros Therapeutics, Inc.
Filing Date: 2025-02-26
Form: S-8
Chunk 2
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 the contents of the Prior Registration Statements, to the extent relating to the registration of Common Stock issuable under the 2020 Plan and the 2020 ESPP, are incorporated herein by reference and made part of this Registration Statement, except as amended hereby.

# PART II

## ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.
The Registrant hereby incorporates by reference into this Registration Statement the following documents previously filed with the Commission:

(a) The Registrant’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the Commission on February 26, 2025;

(b) The description of the Common Stock which is contained in a registration statement on Form 8-A (File No. 001-39264), filed with the Commission on April 3, 2020, under Section 12(b) of the Securities Exchange Act of 1934, as amended (the “

#### Exchange Act
”), including any amendment or report filed for the purpose of updating such description; and

(c) All other reports and documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14, and 15(d) of the Exchange Act (other than Current Reports furnished under Item 2.02 or Item 7.01 of Form 8-K and exhibits furnished on such form that relate to such items) on or after the date of this Registration Statement and prior to the filing of a post-effective amendment to this Registration Statement which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be a part of this Registration Statement from the date of the filing of such reports and documents. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any subsequently filed document that also is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

## ITEM 8. EXHIBITS
| Exhibit 
 Number  |     | Description                                                                                                                                                                                |     | Incorporated by Reference |     |            |     |             |     |                   |
|         |     | Schedule                                                                                                                                                                                   
 Form                                                                                                                                                                                       |     | File                      
 Number                    |