Dyne Therapeutics, Inc DYN

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Dyne Therapeutics, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 15.6200 · FX 1 USD = 1.277900 SGD · about SGD 19.9608 per unit

Sign in to practise with simulated trades before investing real money. 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 17.12 → 15.62 · -8.8%
26.78020.51514.250 1,2 3,4,5 6,7 8 9 10,11 12 13,14 15,16 17 18 19 20 21 22 23,24 25,26 27 Oct 25Jan 26Apr 26Jul 26Oct 26

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

Price & SEC Filing History 24 Oct 2025 — 25 Oct 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.

Weekend
Weekend
15.5600 15.8600 15.3150 15.6200 2,134,278
15.9850 16.3350 15.6700 15.7700 2,052,500
16.3300 16.7300 15.9100 16.0700 1,789,800
15.2700 16.5600 15.1400 16.2700 3,405,300
14.4500 15.3750 14.4500 15.2300 3,346,200
Weekend
Weekend
15.2100 15.4900 14.1300 14.2500 2,860,500
15.1500 15.4700 15.0400 15.2900 2,074,600
15.1100 15.4150 14.7100 15.0400 2,195,900
15.9700 15.9900 15.2800 15.3000 3,341,600
16.5400 16.7600 15.7300 15.9600 2,915,100
Weekend
Weekend
16.4100 17.3100 16.3600 16.6400 3,565,900
15.8350 16.4700 15.3500 16.3700 6,279,500
15.4000 16.1150 15.2450 15.9700 3,489,900
15.5000 15.5900 14.9250 15.4000 4,098,700
15.3100 15.5400 15.0800 15.4400 4,377,300
Weekend
Weekend
16.0300 16.0300 15.0850 15.2000 2,534,100
16.0100 16.2800 15.5200 15.8200 3,699,400
16.0500 16.7960 15.9200 16.1100 4,456,500
27 · 8-K After-hours · 20:10 ET 8-K ↗
16.4000 16.5500 15.9700 16.2100 2,287,000
15.8600 16.4300 15.6300 16.3400 2,305,800
Weekend
Weekend
16.6200 16.7550 16.0200 16.0300 1,612,100
16.0900 16.6450 15.8800 16.5100 3,197,700
17.0800 17.0810 16.1800 16.2300 2,636,200
17.3900 17.5900 17.0600 17.1400 2,627,000
17.3100 17.5900 16.7500 17.1200 3,219,800
Weekend
Weekend
18.0700 18.1500 16.9600 17.1100 4,849,100
17.9000 18.1050 17.6200 18.0600 2,846,800
18.3700 18.3700 17.0900 17.3050 2,156,000
18.5200 18.6200 17.8700 17.9000 3,029,200
18.4000 19.1450 18.2650 18.5200 3,196,900
Weekend
Weekend
18.5900 18.7400 17.9400 18.2100 3,774,300
19.0250 19.0250 17.9300 18.4200 4,709,500
19.3800 20.1600 18.9700 19.1900 5,143,000
17.0800 20.9100 17.0020 20.3100 17,173,100
No trading
Weekend
Weekend
24.5900 24.7000 24.1400 24.2800 1,588,000
25.2600 25.3900 24.6000 24.9500 1,453,500
25.5500 26.1800 24.9200 25.1400 2,180,600
24.9900 25.4000 24.7200 25.1000 1,629,400
24.9200 25.6500 24.5800 25.4300 2,769,300
Weekend
Weekend
25.8200 25.9800 24.8300 25.0700 1,186,900
26.2900 26.4900 25.9750 26.0900 1,018,700
26.3200 26.4740 25.7800 26.3600 1,527,800
26.2800 26.6900 25.9650 26.3400 1,459,200
26.1300 26.1350 25.1400 25.9900 1,370,100
Weekend
Weekend
26.2150 26.8700 26.0200 26.1000 1,181,800
26.3300 26.4300 25.6750 25.9800 1,484,300
26.5000 26.9400 25.9800 26.7800 1,952,000
25.8750 26.3100 25.4600 26.0000 1,900,700
25.8980 26.4300 25.3000 26.1500 1,317,600
Weekend
Weekend
25.7300 25.9300 25.3000 25.7000 1,684,500
26.0000 26.4800 25.8750 25.9600 1,901,600
26.8400 27.3050 26.1100 26.1700 1,781,400
26.8700 27.1340 26.1400 26.7100 1,398,900
25.7800 26.8400 25.7000 26.5000 3,022,600
Weekend
Weekend
26.2000 26.3350 25.2450 26.2500 1,991,000
26.5100 26.7700 25.5800 25.8800 1,330,600
26.3250 27.0900 25.8600 26.1700 2,152,600
25.8000 26.0800 25.2000 25.9700 2,774,200
25.0400 25.3800 24.1800 25.2400 2,131,900
Weekend
Weekend
25.8000 25.9900 24.4100 25.1800 1,825,200
24.5000 25.8000 23.9500 25.7300 1,924,500
26 · 8-K After-hours · 16:35 ET 8-K ↗ 25 · 10-Q After-hours · 16:05 ET 10-Q ↗
25.9600 26.0900 24.7100 25.1000 2,104,700
25.4200 26.2600 25.1800 25.9000 2,334,400
25.0000 26.1200 24.5900 25.6300 3,332,400
Weekend
Weekend
23.9200 24.8700 23.7000 24.4400 5,066,100
22.9500 24.3400 22.7550 23.8900 4,670,800
24 · 424B5 After market open · 13:21 ET 424B5 ↗ 23 · 8-K After market open · 13:19 ET 8-K ↗
22.0800 23.3500 21.7100 23.2100 9,159,800
22 · 424B5 After market open · 13:22 ET 424B5 ↗
23.3600 24.2300 23.1750 23.8300 1,373,700
24.5600 24.7900 23.3700 23.4500 2,528,600
21 · 8-K Pre-market · 03:35 ET 8-K ↗
Weekend
Weekend
22.1600 23.8000 22.0300 23.7400 1,537,900
23.8400 23.8400 21.2800 22.7200 1,681,800
23.6200 24.0050 23.2000 23.9900 1,253,600
23.8200 24.2100 23.2100 23.7800 2,176,500
23.2600 23.7700 22.6300 23.6400 1,884,400
Weekend
Weekend
24.2100 24.2800 22.5750 23.4200 1,514,800
23.7500 24.6000 23.3800 24.2700 1,836,200
23.4000 23.9100 22.4000 23.8300 2,528,300
22.8000 24.2700 22.4500 23.8300 3,058,500
23.0700 23.3240 22.4150 22.8400 2,919,500
Weekend
Weekend
No trading
21.9200 23.1100 21.8200 23.0700 2,164,700
22.1500 22.4400 21.7000 21.7900 1,383,800
21.2800 22.8900 21.1800 22.2100 2,510,300
20.8500 21.3500 20.4350 21.2600 2,172,600
Weekend
Weekend
20.9600 21.6200 20.4200 20.9400 5,436,300
20.3100 21.2550 20.2500 20.6100 1,627,600
20.3800 21.1300 20.2700 20.3300 2,186,200
20.4350 21.5400 20.2300 20.2600 2,075,800
20 · 8-K After-hours · 16:15 ET 8-K ↗
20.1750 20.9850 20.1100 20.8700 2,560,200
Weekend
Weekend
No trading
20.0000 20.4850 19.1400 19.8000 5,112,000
18.3300 20.4400 18.2400 19.2000 3,452,700
19 · 8-K Pre-market · 07:35 ET 8-K ↗
18.7300 18.8150 17.6450 18.0700 1,137,400
18.4600 19.3900 18.1900 18.7300 1,644,000
Weekend
Weekend
18.0400 18.5150 17.9500 18.1900 926,800
17.6800 18.2700 17.4000 17.9500 1,980,800
17.7500 18.7600 17.5200 17.6700 1,267,600
17.1600 18.0000 16.8900 17.9200 1,701,200
18 · 8-K After-hours · 16:05 ET 8-K ↗
17.2800 17.2850 16.5600 16.8100 2,058,300
Weekend
Weekend
18.0900 18.6000 16.6300 17.0400 1,882,600
18.1500 18.8000 18.1500 18.4100 1,446,100
17.2500 18.0700 17.1900 17.9900 1,556,900
17 · 8-K Pre-market · 07:35 ET 8-K ↗
18.3000 18.4850 16.9600 17.2400 1,882,600
19.1500 19.1850 18.1700 18.6300 1,442,200
Weekend
Weekend
18.6500 19.6100 18.6500 19.3300 1,502,500
18.1500 18.6850 17.9300 18.5600 1,270,500
18.1500 18.9550 17.8900 18.1600 1,051,000
18.2150 18.5700 17.5400 18.1500 1,685,100
No trading
Weekend
Weekend
17.2100 17.9650 17.1500 17.3700 1,448,100
17.3000 17.7400 16.9900 17.3700 1,773,500
16.1800 17.6400 16.0550 17.5600 1,932,400
16.4800 16.6300 15.8700 15.9200 1,688,800
17.2750 17.4600 16.4000 16.5400 1,584,900
Weekend
Weekend
17.8450 17.9210 17.1850 17.2900 1,197,200
18.4700 18.8400 18.1100 18.2800 913,100
18.4350 18.6850 18.1900 18.4400 979,900
18.4400 18.5200 17.7300 18.3700 846,700
17.5600 18.6600 17.5200 18.4600 1,182,000
16 · 8-K Pre-market · 07:35 ET 8-K ↗ 15 · 10-Q Pre-market · 07:25 ET 10-Q ↗
Weekend
Weekend
17.4800 17.8800 17.3200 17.6100 1,741,700
18.8500 18.9500 17.3500 17.5400 1,691,300
17.7500 18.9900 17.5600 18.8400 1,720,200
17.9000 18.1300 16.9700 17.4700 1,048,900
17.3100 18.0200 17.2250 17.7100 1,512,800
Weekend
Weekend
17.4600 17.8750 17.2100 17.3900 1,176,600
17.4650 17.9100 17.2900 17.5500 1,035,500
18.0000 18.0100 17.3500 17.4100 1,548,000
18.0400 19.0000 17.9400 18.1600 2,127,300
18.3400 18.4450 17.9850 18.0400 1,718,500
Weekend
Weekend
19.4750 19.4750 18.1150 18.2600 1,234,900
14 · DEFA14A After-hours · 16:10 ET DEFA14A ↗ 13 · DEF 14A After-hours · 16:05 ET DEF 14A ↗
19.4100 19.4690 18.2700 18.9000 1,792,000
19.2500 20.0250 19.0400 19.6700 2,149,000
19.9300 20.0900 19.0350 19.2100 2,359,200
20.1300 20.3650 19.7900 20.0200 1,740,900
Weekend
Weekend
20.6300 20.9900 19.9200 20.4100 2,674,200
20.0000 20.3850 19.4700 19.9100 1,920,400
19.9800 21.4300 19.4000 19.9800 2,629,600
19.1500 19.9900 18.8900 19.8100 2,279,800
18.7900 19.1800 18.3800 19.0000 1,522,200
Weekend
Weekend
19.6800 19.9900 18.5300 18.6800 1,243,800
12 · PRE 14A After-hours · 16:29 ET PRE 14A ↗
18.1500 19.3700 18.1400 19.3600 2,004,300
18.9900 19.2300 17.9100 18.3800 1,121,500
18.1100 18.3400 17.8100 18.1600 957,000
18.7900 19.0450 18.3200 18.3500 1,311,500
Weekend
Weekend
No trading
17.4520 18.9000 17.4520 18.8400 1,939,700
18.4200 19.0200 18.0400 18.1000 1,430,900
17.7050 18.5000 17.5150 18.1300 2,205,100
17.2200 17.4600 16.8700 17.0900 1,702,200
Weekend
Weekend
18.4300 18.9200 17.0700 17.1400 1,772,100
18.6400 19.2900 18.2900 18.5500 1,569,600
18.2400 19.1550 18.2250 18.9800 2,830,700
17.6000 18.0400 17.0700 17.8500 2,175,500
18.0000 18.7400 17.5150 17.8700 2,151,100
Weekend
Weekend
17.8800 18.8400 17.2500 17.5600 5,064,600
17.8400 18.0000 17.2400 17.8000 2,052,200
18.5900 18.7100 18.1580 18.2900 2,561,600
18.0600 19.0250 17.6300 18.6600 2,278,600
18.3700 18.8800 18.1050 18.1300 3,063,400
Weekend
Weekend
18.3900 18.8000 17.4150 17.9200 2,445,200
19.7100 19.7100 18.0100 18.0600 2,436,600
19.7500 19.9900 18.8300 19.9900 2,903,500
17.6800 20.0300 17.5950 19.7800 5,746,900
15.2700 18.2100 14.9600 17.6900 5,279,800
Weekend
Weekend
14.7500 15.3600 14.4600 14.8600 2,592,800
15.0100 15.2300 14.6300 15.2000 2,038,400
14.8000 15.5600 14.4100 15.2300 1,742,600
15.4900 15.8100 14.5800 14.6000 1,913,000
14.7800 16.3400 14.0000 16.1500 2,258,000
11 · 8-K Pre-market · 07:35 ET 8-K ↗ 10 · 10-K Pre-market · 07:20 ET 10-K ↗
Weekend
Weekend
15.7200 16.0050 15.1000 15.6200 1,932,800
16.0100 16.2500 15.4100 16.1900 1,769,400
15.5000 16.1600 15.2250 16.0900 2,332,400
15.5300 15.7100 15.2500 15.5400 1,882,700
14.9800 15.5300 14.7600 15.4500 2,760,400
Weekend
Weekend
15.0400 15.1700 14.5600 14.8800 1,761,400
15.3900 15.6000 14.9600 15.2500 1,435,700
15.1100 15.4650 14.9800 15.3800 1,454,900
15.8100 15.8100 14.6700 15.2800 2,349,300
No trading
Weekend
Weekend
16.0300 16.5300 15.5050 15.5400 898,900
16.7100 16.7100 15.8000 16.0000 2,244,800
17.1100 17.2050 16.2700 16.6800 952,800
16.9300 17.4500 16.8300 17.1400 2,016,000
16.6400 17.0700 16.1000 16.9900 1,860,500
Weekend
Weekend
17.0900 17.4900 16.4000 16.8000 1,422,000
18.1300 18.5050 16.5200 16.5500 2,170,000
19.1100 19.1100 17.8500 18.2300 1,885,400
18.7800 19.3900 18.5600 18.9600 1,507,200
17.5600 19.0500 17.4500 18.7600 1,823,100
Weekend
Weekend
17.6700 18.0000 17.1100 17.8900 2,446,500
17.5500 18.0600 17.3050 17.8800 1,911,500
17.9100 18.2300 17.2750 17.7000 1,860,700
17.9600 18.5800 17.8500 18.0400 1,599,200
17.7300 18.2000 17.4200 18.0000 2,527,600
Weekend
Weekend
18.0000 18.3160 17.6100 18.0000 2,748,700
17.5000 18.2350 17.3800 18.0800 2,866,800
16.5100 17.5700 16.4250 17.5000 1,400,600
16.5200 16.8000 16.0000 16.5800 2,077,100
No trading
Weekend
Weekend
16.6600 17.2400 16.4000 16.7050 1,964,000
17.4100 17.5000 16.3000 16.4200 1,542,300
17.0400 17.4750 16.8600 17.4500 3,630,700
17.2400 17.4550 16.7600 17.0400 2,349,900
17.8800 17.8800 16.9600 17.4600 1,879,400
9 · 8-K Pre-market · 07:35 ET 8-K ↗
Weekend
Weekend
18.4700 18.7300 17.7000 17.7700 1,321,500
18.9400 19.0000 17.9800 18.2600 1,691,900
18.4600 19.9000 18.2500 19.3900 2,140,900
18.0400 18.3900 17.6700 18.1200 2,541,300
18.4100 18.6100 17.5750 18.2300 3,224,900
Weekend
Weekend
19.5900 19.7900 18.0020 18.5000 2,653,800
No trading
19.1800 19.8100 19.0300 19.5600 1,433,800
19.4300 19.8200 18.9200 19.2000 1,985,000
19.9600 20.1700 19.5250 19.5900 2,232,400
Weekend
Weekend
20.3500 20.3500 19.6800 20.0400 964,700
No trading
20.3300 20.7400 20.2300 20.3500 971,000
20.6900 21.0000 20.2600 20.4100 1,055,700
8 · 8-K Pre-market · 07:35 ET 8-K ↗
19.8000 20.9400 19.5100 20.7800 1,421,600
Weekend
Weekend
18.7600 20.1100 18.7300 19.8500 4,120,000
19.1400 19.4300 18.4300 18.5500 1,812,100
19.5400 19.8600 18.7800 18.9000 2,170,100
19.3300 19.8400 19.0600 19.5500 3,230,400
19.3100 19.8700 19.1500 19.5900 2,791,000
Weekend
Weekend
19.5100 19.9600 19.2000 19.2700 4,454,100
20.0500 20.8000 19.2000 19.4200 3,284,100
7 · 424B5 After-hours · 16:31 ET 424B5 ↗ 6 · 8-K After-hours · 16:22 ET 8-K ↗
19.5650 20.6000 19.2500 19.6900 9,976,400
21.4100 21.6800 18.2100 18.4400 6,355,200
5 · 424B5 After-hours · 16:19 ET 424B5 ↗ 4 · 8-K After-hours · 16:07 ET 8-K ↗
21.5900 23.9600 21.1300 22.2000 8,161,300
3 · 8-K Pre-market · 06:36 ET 8-K ↗
Weekend
Weekend
20.6800 20.9950 20.1400 20.2800 2,574,600
20.0200 21.0900 19.6300 20.6500 2,105,400
20.2700 20.5600 19.6450 20.0900 2,539,300
20.7400 21.0800 19.4500 19.9900 3,325,100
21.3000 21.5800 20.5500 20.6100 1,611,500
Weekend
Weekend
21.2000 22.2900 20.5900 21.9000 2,258,400
No trading
21.0000 21.6150 20.8100 21.1700 3,078,400
21.5300 21.7900 20.4400 20.8000 2,570,100
21.3000 22.2700 21.1000 21.6700 2,180,600
Weekend
Weekend
19.9100 21.2400 19.6700 21.1800 1,908,000
21.0500 21.9800 20.0300 20.1200 2,034,900
20.6700 21.6450 20.4750 20.6000 1,991,300
19.9100 21.3100 19.5300 20.9600 2,101,300
18.6100 22.0000 18.4200 20.2400 4,272,800
Weekend
Weekend
18.3400 19.4100 18.3400 18.7900 1,896,100
18.3200 19.1900 18.2000 18.8300 1,497,800
19.4100 20.0700 18.6000 18.6100 1,784,500
18.3900 19.7500 18.1800 19.6700 2,179,600
18.7800 19.0000 18.1150 18.5100 2,038,100
Weekend
Weekend
17.8100 18.3900 17.0250 18.3600 3,622,500
21.0600 21.1800 17.2350 18.2050 5,272,500
2 · 8-K After-hours · 16:16 ET 8-K ↗ 1 · 10-Q After-hours · 16:05 ET 10-Q ↗
21.4400 21.4500 20.3900 20.9000 2,368,400
23.8600 23.9100 21.2500 21.5200 3,083,900
22.5000 24.2500 21.7700 24.1100 2,847,700
Weekend
Weekend
23.2100 23.3450 22.2300 22.5800 3,002,500
23.4900 24.1050 23.2600 23.5500 2,240,100
24.2800 24.5200 23.0400 23.6300 3,458,700
24.1300 25.0000 23.7800 24.2900 3,516,100
23.4000 24.9500 23.0000 24.1700 12,671,800
Weekend
Weekend
16.7700 17.3900 16.5800 17.1200 1,776,100

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.

27 8-K 8-K (opens SEC filing in a new tab) After-hours · 20:10 ET Summarise
26 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
25 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
24 424B5 424B5 (opens SEC filing in a new tab) After market open · 13:21 ET Summarise
23 8-K 8-K (opens SEC filing in a new tab) After market open · 13:19 ET Summarise
22 424B5 424B5 (opens SEC filing in a new tab) After market open · 13:22 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 03:35 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:35 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:35 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:35 ET Summarise
15 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 07:25 ET Summarise
14 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
13 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
12 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:29 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:35 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) Pre-market · 07:20 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:35 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:35 ET Summarise
7 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
5 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:36 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
1 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise