NASDAQ · CRBU

Caribou Biosciences, Inc.

Closing price · Nov 13, 2026 $0.3619

Latest quarter · ended Sep 30, 2026

Sales slipped and cash got weaker

descriptionFiled Nov 5, 2026
Revenue growthShrinking
−26.9%
Quarter ended Dec 31, 2024: −41.6% sales vs. a year beforeQuarter ended Mar 31, 2025: −3.1% sales vs. a year beforeQuarter ended Jun 30, 2025: −23.0% sales vs. a year beforeQuarter ended Sep 30, 2025: +8.6% sales vs. a year beforeQuarter ended Dec 31, 2025: +89.7% sales vs. a year beforeQuarter ended Mar 31, 2026: +1.9% sales vs. a year beforeQuarter ended Jun 30, 2026: −43.8% sales vs. a year beforeQuarter ended Sep 30, 2026: −26.9% sales vs. a year before
Dec '24Sep '26
$1.61M vs. $2.2M a year ago
Cash from operationsBetter
−$22.5M
Quarter ended Dec 31, 2024: −$35.5M cash from operationsQuarter ended Mar 31, 2025: −$36.7M cash from operationsQuarter ended Jun 30, 2025: −$28.3M cash from operationsQuarter ended Sep 30, 2025: −$25.2M cash from operationsQuarter ended Dec 31, 2025: −$20.8M cash from operationsQuarter ended Mar 31, 2026: −$27M cash from operationsQuarter ended Jun 30, 2026: −$22.8M cash from operationsQuarter ended Sep 30, 2026: −$22.5M cash from operations
Dec '24Sep '26
vs. −$25.2M a year ago
Share countDiluting
+15.6%
Quarter ended Dec 31, 2024: 93M sharesQuarter ended Mar 31, 2025: 93M sharesQuarter ended Jun 30, 2025: 93.12M sharesQuarter ended Sep 30, 2025: 93.47M sharesQuarter ended Dec 31, 2025: 96.64M sharesQuarter ended Mar 31, 2026: 99.18M sharesQuarter ended Jun 30, 2026: 107.21M sharesQuarter ended Sep 30, 2026: 108.04M shares
Dec '24Sep '26
108.04M shares vs. 93.47M 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

Selling Insiders: as of Nov 13 Funds: as of Jun 30, 2026
−1000+100 −50
  • account_balance
    0 funds bought, 1 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
    4 real insider sales in 12 months. $45.4K 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

139 funds report owning CRBU, up from 135

Holdings as of Jun 30, 2026
New27
Added42
Held48
Trimmed22
Sold out23

Last quarter

Who bought and who sold

Apr–Jun 2026
PFM Health Sciences, LP
−63%

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 · Feb 20 · 190,000 sh · 4 peopleStock grant · Feb 20 · 151,700 shStock grant · Feb 20 · 55,000 shPlanned sale (10b5-1) · Feb 24 · $2.09KOpen-market sale · Feb 24 · $33.4K · 3 peopleOpen-market sale · Feb 25 · $12K
CEOCFOOther officersDirectorsDecFebAprJunAugOctStock grant · Feb 20 · 190,000 sh · 4 peopleStock grant · Feb 20 · 151,700 shStock grant · Feb 20 · 55,000 shPlanned sale (10b5-1) · Feb 24 · $2.09KOpen-market sale · Feb 24 · $33.4K · 3 peopleOpen-market sale · Feb 25 · $12K

Last 12 months. No real trades in the last 6.

Showing 4 real trades. Hidden: 6 stock grants, 1 planned 10b5-1 sale. Those happen on a schedule and say little about what an insider thinks. Bigger dot means a bigger trade.

Real trades, newest first

Feb 25 Timothy Kelly CTO Open-market sale $12K 6,228 sh at $1.93 Sold 8% of stake
Feb 24 Ruhi Khan Chief Business Officer Open-market sale $13.6K 6,938 sh at $1.96 Sold 6% of stake
Feb 24 Barbara McClung Chief Legal Officer Open-market sale $13.6K 6,938 sh at $1.96 Sold 1% of stake
Feb 24 Timothy Kelly CTO Open-market sale $6.17K 3,147 sh at $1.96 Sold 4% of stake

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

Big bets

Funds with a big share of their money in CRBU

As of Jun 30, 2026
FundOf fundOwnsValueChange
Pfizer Inc5%4.3%$7.88MSame

Funds that hold 150 stocks or fewer, where this stock is 3% or more of what they reported. "Of fund" is its share of the fund's 13F value.

"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.

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