Notice of Proposed Sale · 144
Keros Therapeutics, Inc.
KROSNASDAQEQUITYCurrent
Notice of Proposed Sale
Structured filing — 144
primary_doc.xml
Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.
Proposed-sale notice
- Issuer
- Keros Therapeutics, Inc.
- Issuer CIK
- 0001664710
- SEC file number
- 001-39264
- Phone
- 617-314-6297
- Person for whose account securities are to be sold
- Newton Charles W.
- Relationships to issuer
- Director
- Street
- 1050 WALTHAM STREET, SUITE 302
- City
- LEXINGTON
- State / country code
- MA
- Postal code
- 02421
Securities proposed for sale
| Security | Proposed units | Aggregate market value | Units outstanding | Approximate sale date | Exchange | Broker / market maker |
|---|---|---|---|---|---|---|
| Common | 551 | 5,719.38 | 19,827,188 | 08/18/2026 | NASDAQ | UBS Financial Services, Inc. |
Broker / market maker — proposed row 1, entry 1
- Name
- UBS Financial Services, Inc.
- Street
- 11 Madison Ave
- Street (continued)
- 4th Floor
- City
- New York
- State / country code
- NY
- Postal code
- 10010
Acquisition of securities to be sold
| Security | Acquired | Nature of acquisition | Acquired from | Amount acquired | Gift transaction | Payment date | Nature of payment |
|---|---|---|---|---|---|---|---|
| Common | 08/15/2026 | RSU | Issuer | 551 | N | 08/15/2026 | N/A |
Sales reported in the preceding three months
| Seller | Security | Sale date | Amount sold | Gross proceeds |
|---|---|---|---|---|
| Charles W Newton | Common | 06/11/2026 | 550 | 5,519.64 |
Seller — prior-sale row 1, entry 1
- Name
- Charles W Newton
- Street
- 1050 WALTHAM STREET
- Street (continued)
- SUITE 302
- City
- Lexington
- State / country code
- MA
- Postal code
- 02421
Prior-sale reporting
- Nothing to report for the preceding three months
- N
Notice signature
- Notice date
- 08/18/2026
- Signed
- /s/ UBS Financial Services Inc, as attorney-in-fact for Charles Newton
- Plan adoption dates
- 03/12/2026