NASDAQ · KROS

Keros Therapeutics, Inc.

Closing price · Nov 13, 2026 $10.30
Last insider buy price $10.27 Paid by Director Jean Bienaime on Aug 17, 2026 (Form 4). Not today's price.

Latest quarter · ended Sep 30, 2026

Sales grew and cash improved

descriptionFiled Nov 5, 2026
Revenue growthFaster
+183.3%
Quarter ended Dec 31, 2024: −100.0% sales vs. a year beforeQuarter ended Mar 31, 2026: −100.0% sales vs. a year beforeQuarter ended Jun 30, 2026: −100.0% sales vs. a year beforeQuarter ended Sep 30, 2026: +183.3% sales vs. a year before
Dec '24Sep '26
$40M vs. $14.1M a year ago
Cash from operationsBetter
$3.39M
Quarter ended Dec 31, 2024: −$46M cash from operationsQuarter ended Mar 31, 2025: $161M cash from operationsQuarter ended Jun 30, 2025: −$29.6M cash from operationsQuarter ended Sep 30, 2025: $3.25M cash from operationsQuarter ended Dec 31, 2025: −$27.3M cash from operationsQuarter ended Mar 31, 2026: −$3.53M cash from operationsQuarter ended Jun 30, 2026: −$20.4M cash from operationsQuarter ended Sep 30, 2026: $3.39M cash from operations
Dec '24Sep '26
+4% from $3.25M a year ago
Share countBuying back
−35.6%
Quarter ended Dec 31, 2024: 40.56M sharesQuarter ended Mar 31, 2025: 40.62M sharesQuarter ended Jun 30, 2025: 40.62M sharesQuarter ended Sep 30, 2025: 30.47M sharesQuarter ended Dec 31, 2025: 19.72M sharesQuarter ended Mar 31, 2026: 19.79M sharesQuarter ended Jun 30, 2026: 19.83M sharesQuarter ended Sep 30, 2026: 19.62M shares
Dec '24Sep '26
19.62M shares vs. 30.47M a year ago

Numbers come from the company's own 10-Q and 10-K reports filed with the SEC. Each bar is one quarter, oldest on the left. The colored bar is the latest. Hover over or tap a bar to see its number.

Smart money pulse

What insiders and funds are doing

Mixed Insiders: as of Nov 13 Funds: as of Jun 30, 2026
−1000+100 +25
  • account_balance
    2 funds bought, 0 sold in the quarter ended Jun 30, 2026, counting funds that hold 500 stocks or fewer and $1M+ of this one. Index funds and banks are left out.
  • info
    7 real insider sales in 12 months. $427K in total, not counting planned sales.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

132 funds report owning KROS, down from 150

Holdings as of Jun 30, 2026
New16
Added45
Held24
Trimmed47
Sold out34

Last quarter

Who bought and who sold

Apr–Jun 2026
Nantahala Capital Management, LLC
+4%
Adar1 Capital Management, LLC
+154%

Change in shares held from Mar 31 to Jun 30, 2026, biggest holdings first. Only funds that hold 500 stocks or fewer and $1M+ of this one: index funds and banks own almost everything, so their changes say little. Bars stop at ±100%.

Insider trades · last 12 months

Real buys and sales

● Open-market buy● Open-market sale
CEOCFOOther officersDirectorsDecJanFebMarAprMayJunJulAugSepOctNovStock grant · Mar 9 · 13,215 shOption exercise · Apr 2 · $16.5KStock grant · Jun 3 · 35,710 sh · 5 peoplePlanned sale (10b5-1) · Jun 4 · $84.5K · 3 peoplePlanned sale (10b5-1) · Jun 11 · $5.52KStock grant · Jul 1 · 13,786 shPlanned sale (10b5-1) · Aug 18 · $5.68KOpen-market sale · Feb 18 · $141K · 2 peopleOpen-market sale · Feb 18 · $77.5KOpen-market sale · Feb 19 · $113KOpen-market buy · Mar 9 · $22.4KOpen-market buy · Apr 15 · $11.7KOpen-market buy · May 15 · $10.6KOpen-market buy · Jun 15 · $10.2KOpen-market buy · Jul 15 · $10.6KOpen-market buy · Aug 17 · $10.3KOpen-market sale · Aug 18 · $95.5K · 3 people
CEOCFOOther officersDirectorsJunJulAugSepOctNovStock grant · Jun 3 · 35,710 sh · 5 peoplePlanned sale (10b5-1) · Jun 4 · $84.5K · 3 peoplePlanned sale (10b5-1) · Jun 11 · $5.52KStock grant · Jul 1 · 13,786 shPlanned sale (10b5-1) · Aug 18 · $5.68KOpen-market buy · Jun 15 · $10.2KOpen-market buy · Jul 15 · $10.6KOpen-market buy · Aug 17 · $10.3KOpen-market sale · Aug 18 · $95.5K · 3 people

Last 6 months. A wider screen shows 12.

Showing 13 real trades. Hidden: 7 stock grants, 1 option exercise, 5 planned 10b5-1 sales. Those happen on a schedule and say little about what an insider thinks. Bigger dot means a bigger trade.

Real trades, newest first

Aug 18 Esther Cho Chief Legal Officer Open-market sale $46.2K 4,485 sh at $10.29 Sold 11% of stake
Aug 18 Lorena Lerner Chief Scientific Officer Open-market sale $36.7K 3,568 sh at $10.29 Sold 11% of stake
Aug 18 Annita Tanini Corp. Controller & VP, Finance Open-market sale $12.6K 1,224 sh at $10.29 Sold 3% of stake
Aug 17 Jean Bienaime Past buys: 3 of 6 beat Director Open-market buy $10.3K 1,000 sh at $10.27
Jul 15 Jean Bienaime Past buys: 3 of 6 beat Director Open-market buy $10.6K 1,000 sh at $10.61
Jun 15 Jean Bienaime Past buys: 3 of 6 beat Director Open-market buy $10.2K 1,000 sh at $10.19
May 15 Jean Bienaime Past buys: 3 of 6 beat Director Open-market buy $10.6K 1,000 sh at $10.58
Apr 15 Jean Bienaime Past buys: 3 of 6 beat Director Open-market buy $11.7K 1,000 sh at $11.70
Mar 9 Jean Bienaime Past buys: 3 of 6 beat Director Open-market buy $22.4K 2,000 sh at $11.21
Feb 19 Jasbir Seehra CEO, Director Open-market sale $113K 7,015 sh at $16.17 Sold 2% of stake
Show 3 older real trades
Feb 18 Esther Cho SVP, General Counsel Open-market sale $77.6K 4,745 sh at $16.35 Sold 11% of stake
Feb 18 Keith Regnante CFO Open-market sale $77.5K 4,739 sh at $16.35 Sold 11% of stake
Feb 18 Lorena Lerner Chief Science Officer Open-market sale $63.3K 3,873 sh at $16.35 Sold 11% of stake

"Past buys: 2 of 3 beat" means this insider bought stock in 3 earlier quarters, and in 2 of them what they bought did better than the typical stock over the next 6 months. A past record is data, not a forecast.

Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.

Top holders

Biggest funds in KROS

As of Jun 30, 2026
FundOwnsValueChange
BlackRock, Inc.14.2%$29.9M+16%
Nantahala Capital Management, LLC7.2%$15.1M+4%
AQR Capital Management LLC4.9%$10.4M+138%
Vanguard Capital Management LLC4.2%$8.92MSame
Orbimed Advisors LLC3.9%$8.12MSame

"Owns" is shares reported divided by shares outstanding.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

This is data, not investment advice. About StockToast