Caribou Biosciences, Inc CRBU

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Caribou Biosciences, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 1.5700 · FX 1 USD = 1.288650 SGD · about SGD 2.0232 per unit

Sign in to place simulated trades. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 2.29 → 1.57 · -31.4%
2.8402.1151.390 1,2 3 4,5 6,7 8 9 10,11 12,13 14 15 16 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 26 Jul 2025 — 27 Jul 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
Weekend
Weekend
1.6200 1.6400 1.5700 1.5700 946,700
1.6200 1.6500 1.6000 1.6300 824,400
1.6500 1.6700 1.6300 1.6600 1,019,700
1.6100 1.7250 1.5900 1.6500 1,607,400
1.6400 1.6700 1.5900 1.6200 1,150,400
Weekend
Weekend
1.6200 1.6900 1.6000 1.6500 1,447,800
1.7000 1.7200 1.6400 1.6600 1,843,200
1.7600 1.7700 1.7050 1.7300 1,215,000
1.8150 1.8350 1.7450 1.7500 3,961,300
1.9100 1.9100 1.7600 1.8000 1,954,800
Weekend
Weekend
1.9200 1.9300 1.7550 1.9250 3,477,100
1.9300 1.9900 1.8400 1.9400 2,207,200
1.8800 2.1100 1.8500 1.9400 3,910,900
1.8400 1.9250 1.7500 1.9200 2,347,300
1.8300 1.8500 1.8000 1.8300 1,092,000
Weekend
Weekend
No trading
1.7700 1.9200 1.7700 1.8200 1,866,300
1.7600 1.7850 1.7250 1.7600 1,696,800
1.8100 1.8150 1.7300 1.7600 1,417,000
1.7000 1.8250 1.6700 1.7700 2,810,300
Weekend
Weekend
1.5700 1.7300 1.5600 1.6800 13,888,000
1.6800 1.6900 1.5600 1.5700 1,641,400
1.6700 1.7050 1.6250 1.6600 1,801,100
1.6200 1.7200 1.6200 1.6600 2,098,500
1.6300 1.7000 1.6200 1.6400 1,771,500
Weekend
Weekend
No trading
16 · 8-K After-hours · 16:02 ET 8-K ↗
1.6600 1.7000 1.5700 1.6400 2,539,700
1.6600 1.7800 1.6300 1.6400 1,737,000
1.6600 1.7300 1.6300 1.6900 2,087,800
1.6100 1.6900 1.6100 1.6600 1,707,600
Weekend
Weekend
1.7400 1.7660 1.5900 1.5950 2,293,100
1.8000 1.8250 1.6100 1.6600 2,704,800
15 · 8-K Pre-market · 08:02 ET 8-K ↗
1.8300 1.8800 1.7700 1.7900 967,800
1.8500 1.9200 1.7800 1.8400 1,632,200
1.9700 1.9700 1.8300 1.8400 1,656,000
Weekend
Weekend
14 · DEFA14A After-hours · 16:01 ET DEFA14A ↗
2.0600 2.0600 1.9100 1.9200 1,677,200
2.0100 2.1500 2.0100 2.0650 1,745,500
2.2900 2.3000 2.0000 2.0000 2,141,700
2.4500 2.4500 2.2900 2.3200 1,738,300
2.3600 2.4900 2.3100 2.4300 1,966,700
Weekend
Weekend
2.3300 2.4000 2.2700 2.3600 1,389,400
2.3000 2.3650 2.2500 2.3100 1,539,500
2.1800 2.4050 2.1400 2.3100 3,736,000
2.1000 2.2500 2.0850 2.1600 1,938,400
No trading
Weekend
Weekend
2.0000 2.1200 1.9720 2.1000 1,394,300
1.9500 2.0150 1.8800 1.9900 1,368,300
1.9800 2.0400 1.9650 2.0000 1,709,800
2.0500 2.1050 1.9450 1.9700 1,801,700
2.1600 2.2790 1.9800 2.0700 2,047,800
Weekend
Weekend
2.1300 2.1900 2.0900 2.1400 1,923,800
2.1300 2.3200 1.9900 2.1400 3,446,900
2.0300 2.1500 1.9950 2.1200 1,671,000
2.0400 2.0800 1.9650 2.0300 1,762,500
1.9700 2.1850 1.9550 2.0300 1,891,300
Weekend
Weekend
1.9000 1.9850 1.8900 1.9400 891,800
13 · 10-Q After-hours · 16:14 ET 10-Q ↗ 12 · 8-K After-hours · 16:10 ET 8-K ↗
1.9500 1.9550 1.8450 1.8800 1,668,400
1.9500 1.9700 1.9250 1.9500 985,900
1.9500 1.9850 1.8900 1.9300 992,100
1.8500 1.9700 1.8500 1.9100 1,258,200
Weekend
Weekend
1.9100 1.9100 1.8300 1.8700 1,136,700
1.9300 1.9550 1.8400 1.8800 1,024,000
2.0800 2.0800 1.9100 1.9200 1,218,400
2.1200 2.1600 2.0550 2.0800 1,135,200
2.1800 2.2600 2.1000 2.1300 2,150,500
Weekend
Weekend
11 · DEFA14A After-hours · 16:01 ET DEFA14A ↗ 10 · DEF 14A After-hours · 16:01 ET DEF 14A ↗
2.2600 2.2650 2.1100 2.1300 1,916,000
2.3300 2.3900 2.2350 2.2600 1,472,400
2.2900 2.3900 2.2610 2.3600 1,443,100
2.3000 2.3250 2.2300 2.2500 1,941,300
2.2100 2.3190 2.1750 2.2900 1,965,600
Weekend
Weekend
2.2200 2.2580 2.1400 2.2000 1,808,600
2.2100 2.2150 2.1000 2.1500 2,089,100
2.1400 2.2200 2.1300 2.2000 1,957,300
1.9700 2.1700 1.9700 2.1200 2,679,500
1.9100 1.9900 1.9000 1.9500 1,019,700
Weekend
Weekend
9 · PRE 14A After-hours · 16:01 ET PRE 14A ↗
1.9600 1.9830 1.9000 1.9300 821,300
1.9500 2.0000 1.9300 1.9600 891,100
1.9500 2.0000 1.9100 1.9500 1,072,900
1.9400 1.9400 1.8400 1.8600 1,006,500
1.9500 2.0050 1.9200 1.9500 633,100
Weekend
Weekend
No trading
1.9100 2.0050 1.8900 1.9400 1,063,900
1.9200 2.0400 1.9200 1.9900 1,256,600
1.8000 2.0050 1.8000 1.9000 1,605,500
8 · 8-K Pre-market · 08:02 ET 8-K ↗
1.7900 1.8060 1.6850 1.7200 1,272,500
Weekend
Weekend
1.8800 1.9100 1.7600 1.7800 896,000
1.8400 2.0050 1.8400 1.9100 1,085,500
1.8500 1.9550 1.8500 1.8800 641,800
1.8400 1.8800 1.7600 1.8200 940,000
1.8900 1.9200 1.8200 1.8600 789,800
Weekend
Weekend
1.9600 1.9700 1.8500 1.8700 958,700
1.8700 1.9800 1.8300 1.9700 1,554,200
1.9600 2.0050 1.8900 1.9100 1,027,600
1.8800 1.9700 1.8600 1.9700 930,300
1.8900 2.0000 1.8600 1.8700 1,351,200
Weekend
Weekend
1.9200 1.9300 1.8400 1.8800 760,700
1.9300 1.9500 1.8600 1.8900 700,500
2.0000 2.0200 1.9250 1.9700 995,900
2.0000 2.0600 1.9600 2.0300 2,310,000
1.7900 2.0000 1.7900 1.9700 1,634,600
Weekend
Weekend
1.6600 1.8300 1.6600 1.8200 1,294,500
7 · 10-K After-hours · 16:09 ET 10-K ↗ 6 · 8-K After-hours · 16:07 ET 8-K ↗
1.7900 1.8150 1.6650 1.7100 1,101,400
1.7800 1.8600 1.7400 1.8000 745,100
1.8000 1.8050 1.7250 1.7600 839,100
1.7800 1.8850 1.7600 1.8400 1,148,300
Weekend
Weekend
1.9500 2.0100 1.8900 1.9000 1,371,600
1.9300 2.0150 1.8700 1.9900 1,217,200
2.1500 2.1800 1.9200 1.9500 2,541,800
1.8950 2.2200 1.8700 2.1400 4,617,500
1.8000 1.9300 1.7800 1.9200 1,864,500
Weekend
Weekend
1.7500 1.8500 1.7100 1.8000 1,762,800
1.6100 1.7700 1.5800 1.7600 1,402,800
1.5500 1.6200 1.5300 1.6200 681,500
1.5700 1.5800 1.5100 1.5500 628,900
No trading
Weekend
Weekend
1.5200 1.6400 1.5200 1.5800 1,515,400
1.5900 1.5900 1.4700 1.5200 800,400
1.5800 1.6000 1.4750 1.5900 1,120,900
1.6300 1.6300 1.5700 1.5700 1,357,400
1.5800 1.6500 1.5300 1.6300 760,800
Weekend
Weekend
1.5200 1.5800 1.4950 1.5700 1,015,700
1.6000 1.6450 1.4500 1.4800 1,268,100
1.5900 1.6400 1.4900 1.6200 2,184,500
1.5550 1.7400 1.4800 1.5600 2,391,300
1.4000 1.4800 1.3800 1.4600 1,157,500
Weekend
Weekend
1.4600 1.4700 1.3900 1.4100 789,900
1.5300 1.5300 1.4650 1.4800 666,000
1.5600 1.5600 1.4910 1.5200 633,400
1.5300 1.5800 1.5150 1.5500 488,100
1.5200 1.5300 1.4700 1.5300 784,100
Weekend
Weekend
1.6100 1.6300 1.5300 1.5300 957,300
1.4950 1.6500 1.4800 1.6200 1,079,400
1.4000 1.5000 1.4000 1.4900 1,394,800
1.4400 1.4500 1.3900 1.3900 1,543,500
No trading
Weekend
Weekend
1.5500 1.5650 1.4500 1.4600 2,637,100
1.6200 1.6300 1.5500 1.5600 1,049,300
1.6000 1.6200 1.5800 1.6100 724,300
1.6000 1.6400 1.5610 1.5900 1,035,700
1.6400 1.6500 1.5200 1.5800 2,562,400
Weekend
Weekend
1.7200 1.7300 1.6400 1.6600 711,600
1.7600 1.7650 1.6800 1.6900 493,300
1.7200 1.8000 1.6950 1.7700 1,006,400
1.6200 1.7200 1.6100 1.7200 858,100
1.5900 1.6150 1.5400 1.6100 726,800
Weekend
Weekend
1.5900 1.6000 1.5400 1.5900 881,900
No trading
1.5700 1.6050 1.5550 1.5900 1,249,400
1.6400 1.6500 1.5800 1.5900 1,117,500
1.6900 1.7100 1.6400 1.6500 1,107,800
Weekend
Weekend
1.7000 1.7200 1.6450 1.7000 780,200
No trading
1.6500 1.7300 1.6400 1.7200 333,000
1.7200 1.7200 1.6300 1.6600 891,800
1.7000 1.7350 1.6700 1.7200 689,800
Weekend
Weekend
1.6400 1.7000 1.6200 1.6800 1,865,700
1.6300 1.7450 1.6200 1.6300 1,098,100
1.6900 1.7300 1.6200 1.6200 956,200
1.7200 1.7400 1.6500 1.6900 1,029,500
1.8400 1.8500 1.7100 1.7100 1,182,100
Weekend
Weekend
1.8600 1.8750 1.7900 1.7900 1,136,100
1.8800 1.9000 1.8200 1.8600 1,055,300
1.8700 1.9100 1.8150 1.9000 929,700
1.9000 1.9000 1.8350 1.8700 719,400
1.9200 1.9550 1.8600 1.8900 1,022,200
Weekend
Weekend
1.9300 1.9500 1.8550 1.9000 726,600
1.8700 1.9650 1.8400 1.9400 954,200
1.7600 1.8700 1.7600 1.8600 808,200
1.7800 1.8250 1.7450 1.7600 942,200
1.8900 1.8900 1.7600 1.7700 1,161,500
Weekend
Weekend
1.9000 1.9700 1.8700 1.9400 407,400
No trading
1.8600 1.8950 1.8000 1.8800 797,600
1.8700 1.8900 1.7600 1.8700 1,074,600
1.7600 1.8700 1.7500 1.8700 1,004,400
Weekend
Weekend
1.7400 1.8600 1.7300 1.7500 1,186,500
1.8400 1.9200 1.7200 1.7500 1,533,200
1.8500 1.8900 1.8050 1.8200 924,100
1.8700 1.9150 1.8300 1.8700 1,196,700
1.9800 2.0070 1.8500 1.8900 1,353,100
Weekend
Weekend
1.9400 2.0700 1.9200 1.9900 1,379,400
2.3000 2.3000 1.9600 1.9850 1,922,100
5 · 10-Q After-hours · 16:09 ET 10-Q ↗ 4 · 8-K After-hours · 16:08 ET 8-K ↗
2.2400 2.2700 2.1100 2.2600 1,492,700
2.0500 2.2550 2.0400 2.2400 1,493,300
2.1400 2.2600 2.0100 2.0700 1,993,700
Weekend
Weekend
2.0200 2.1200 1.9300 2.0900 2,962,000
2.2500 2.2600 2.0800 2.1400 1,851,600
2.2800 2.2900 2.0900 2.1900 2,121,600
2.4000 2.4700 2.1300 2.1700 5,149,900
3.4000 3.5350 2.3800 2.4300 68,354,900
3 · 8-K Pre-market · 07:02 ET 8-K ↗
Weekend
Weekend
2.3100 2.4700 2.2750 2.4200 564,400
2.3500 2.4390 2.3200 2.3200 474,500
2.4800 2.4900 2.3550 2.3700 532,700
2.4600 2.5900 2.4000 2.4700 615,600
2.5100 2.5150 2.3450 2.4500 838,500
Weekend
Weekend
2.5700 2.6000 2.4500 2.4900 656,700
2.5200 2.5900 2.4700 2.5000 377,100
2.8300 2.8500 2.4400 2.5300 1,421,100
2.8300 2.9700 2.7500 2.8400 1,132,100
2.7000 2.9250 2.6800 2.8200 1,174,100
Weekend
Weekend
2.6300 2.7000 2.5800 2.6300 668,900
2.8300 2.9400 2.6400 2.6700 951,200
2.4650 2.8400 2.4300 2.8400 1,963,100
2.3300 2.5100 2.2700 2.4400 1,030,500
2.5500 2.6000 2.3700 2.3800 767,300
Weekend
Weekend
2.7600 2.7700 2.4300 2.4900 1,711,700
2.7600 2.8700 2.7000 2.7500 1,482,200
2.4400 2.7450 2.4000 2.6800 2,722,800
2.3600 2.4400 2.2400 2.4300 1,434,100
2.3000 2.3700 2.2500 2.3400 817,400
Weekend
Weekend
2.2600 2.3400 2.1800 2.2700 1,344,200
2.2800 2.3600 2.1700 2.2300 1,386,400
2.3200 2.3900 2.2350 2.2600 1,631,700
2.3100 2.3700 2.1900 2.3300 1,162,200
2.1800 2.3100 2.1010 2.3000 1,582,300
Weekend
Weekend
1.9300 2.1600 1.8450 2.1300 1,585,100
2.1000 2.1100 1.9000 1.9300 1,263,000
1.8600 2.1800 1.8600 2.1300 2,177,100
1.9700 1.9700 1.8500 1.8600 902,500
1.7500 1.9650 1.6900 1.9300 1,359,300
Weekend
Weekend
1.8100 1.8100 1.6800 1.6900 1,102,400
1.7400 1.8400 1.7400 1.7800 1,975,700
1.8100 1.8500 1.7150 1.7200 1,009,800
1.8200 1.9400 1.7900 1.8000 1,063,100
1.8400 1.8500 1.7800 1.8300 419,600
Weekend
Weekend
1.9000 1.9100 1.7900 1.8000 578,300
1.8000 1.9200 1.8000 1.9100 580,400
1.8400 1.8600 1.7800 1.7800 397,100
1.8200 1.8500 1.7700 1.8400 444,400
1.8600 1.8790 1.8000 1.8100 456,800
Weekend
Weekend
1.8500 1.8990 1.8050 1.8700 482,100
1.9100 1.9100 1.7800 1.8500 543,800
1.8800 1.9410 1.8500 1.8900 383,200
1.8600 1.9600 1.8350 1.8800 500,000
No trading
Weekend
Weekend
1.9300 1.9500 1.8350 1.8700 486,500
2.0200 2.0900 1.9100 1.9400 958,700
2.0200 2.1590 1.9450 1.9800 1,304,600
1.9000 2.0200 1.8800 2.0000 891,700
1.8200 1.8900 1.8000 1.8800 542,300
Weekend
Weekend
1.8400 1.9650 1.8200 1.8500 1,397,700
1.7800 1.8400 1.7400 1.8400 564,200
1.7900 1.8150 1.7350 1.8000 474,300
1.8900 1.9050 1.7300 1.7700 890,000
1.9800 2.0000 1.8650 1.8700 1,375,800
Weekend
Weekend
2.0000 2.0900 1.9500 1.9800 1,109,000
1.9200 2.0200 1.8300 2.0000 1,277,800
1.7200 1.9500 1.6200 1.9500 1,490,400
2 · 10-Q After-hours · 16:09 ET 10-Q ↗ 1 · 8-K After-hours · 16:07 ET 8-K ↗
1.7100 1.7900 1.7050 1.7900 714,200
1.7000 1.7700 1.6800 1.7100 644,500
Weekend
Weekend
1.8600 1.8700 1.7150 1.7300 658,700
1.8900 1.9200 1.7900 1.8100 1,143,000
2.0500 2.0500 1.8500 1.8800 1,426,400
2.1100 2.1100 1.9950 2.0400 1,176,300
2.0450 2.1300 1.9410 2.1000 992,300
Weekend
Weekend
1.9500 1.9900 1.8600 1.9500 1,252,300
2.0200 2.1690 1.9920 2.0300 1,449,200
2.0300 2.1400 1.9950 2.0500 1,663,600
2.2500 2.2700 1.9000 1.9600 3,556,400
2.3100 2.3100 2.1600 2.2900 1,804,600
Weekend
Weekend

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

16 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:02 ET Summarise
14 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
13 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:14 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
11 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
10 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
9 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:02 ET Summarise
7 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
5 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:02 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise