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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
2025-06-20 ADAR1 Capital Management, LLC 10% owner Option exercise · Put Option (right to sell) −2 0
2025-06-04 Knowles Julius Director Grant or award +5,250 6,441
2025-06-04 Knowles Julius Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-06-04 GORDON CARL L Director Grant or award +5,250 5,250
2025-06-04 GORDON CARL L Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-06-04 Kariv Tomer Director Grant or award +5,250 5,250
2025-06-04 Kariv Tomer Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-06-04 Nussbaum Ran Director Grant or award +5,250 5,250
2025-06-04 Nussbaum Ran Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-06-04 Seth Alpna Director Grant or award +5,250 5,250
2025-06-04 Seth Alpna Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-06-04 GRAY MARY ANN Director Grant or award +5,250 5,250
2025-06-04 GRAY MARY ANN Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-06-04 Farzan Nima Director Grant or award +5,250 5,250
2025-06-04 Farzan Nima Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-06-04 BIENAIME JEAN JACQUES Director Grant or award +5,250 5,450
2025-06-04 BIENAIME JEAN JACQUES Director Grant or award · Stock Option (right to buy) +10,500 10,500
2025-05-16 ADAR1 Capital Management, LLC 10% owner Other disposition · Put Option (obligation to buy) −300 0
2025-05-16 ADAR1 Capital Management, LLC 10% owner Other disposition · Put Option (obligation to buy) −836 0
2025-05-16 ADAR1 Capital Management, LLC 10% owner Other disposition · Put Option (obligation to buy) −178 0

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