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CIK 0001664710 · Non-accelerated filer<br>Smaller reporting company

Keros Therapeutics, Inc.

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Ticker
KROS
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Entity type
operating
EIN
811173868
Phone
617-314-6297
Business address
1050 WALTHAM STREET, SUITE 302, LEXINGTON, MA, 02421
Open-market buys, last 90 days
$10,270
in 1 filing
Open-market sales, last 90 days
$101,136
in 4 filings, $6K under 10b5-1 plans

Net −$90,866. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Cho Esther −$46K Chief Legal Officer sold 11% of stake
  2. Lerner Lorena Raquel −$37K Chief Scientific Officer sold 11% of stake
  3. Tanini Annita −$13K Corp. Controller & VP, Finance sold 3% of stake
  4. BIENAIME JEAN JACQUES +$10K Director 1 filing
  5. Newton Charles W. −$6K Director sold 4% of stake

Reading 78 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-08-18 Cho Esther Chief Legal Officer Sale −4,485 $10.29 $46K 35,770
2026-02-24 Cho Esther Chief Legal Officer Grant or award · Employee Stock Option (Right to Buy) +80,000 80,000
2026-02-24 Cho Esther Chief Legal Officer Grant or award · Employee Stock Option (Right to Buy) +80,000 80,000
2026-02-18 Cho Esther SVP, General Counsel Sale −4,745 $16.35 $78K 39,755

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