Assembly Biosciences, Inc ASMB

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Assembly Biosciences, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 19.8400 · FX 1 USD = 1.277900 SGD · about SGD 25.3535 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 29.24 → 19.84 · -32.1%
38.50029.17019.840 1,2 3 4 5,6,7 8 9,10 11,12 13,14 15,16 17 18,19 20 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
20.3400 20.3400 19.3000 19.8400 206,013
20.2900 20.8500 19.9800 20.2800 137,800
21.4200 21.9300 20.3800 20.4600 234,800
20.2300 21.4800 20.0700 21.1900 222,800
20.2200 20.4900 19.9500 20.1600 199,200
Weekend
Weekend
20.6300 20.6300 19.9400 20.0900 167,700
20.7300 21.0400 20.4100 20.5700 204,200
20.1900 20.9900 19.9800 20.5300 241,300
22.6400 22.6400 20.2800 20.3400 305,600
23.4300 23.8300 22.4400 22.7700 207,800
Weekend
Weekend
23.0000 23.5800 22.7200 23.5300 170,500
22.7800 23.0500 22.0800 22.8200 288,400
21.9500 23.1300 21.8000 22.9500 190,800
22.8400 22.9200 21.8000 22.1800 349,200
22.6800 22.9500 22.2700 22.7400 241,700
Weekend
Weekend
23.3000 23.4800 22.0100 22.5400 368,000
23.1800 23.6600 22.7500 22.9800 350,800
23.6500 23.8700 23.2300 23.4900 221,100
23.7000 23.7900 23.0500 23.4800 229,700
23.3500 23.8600 23.0500 23.6100 117,500
Weekend
Weekend
23.7000 24.2500 23.4300 23.6700 143,500
23.7300 24.0200 23.1500 23.6600 179,000
25.4200 25.6300 23.8900 23.9700 275,200
25.6900 25.8900 25.1200 25.4500 1,070,100
25.4000 25.7300 24.8500 25.4400 211,900
Weekend
Weekend
25.4100 25.7800 24.8300 24.9700 1,413,900
26.0200 26.3000 25.1000 25.3400 364,800
26.1100 26.6900 25.1300 25.4800 348,800
29.0000 29.6600 25.3100 26.1100 588,800
30.3100 30.4800 28.7900 28.9600 290,100
Weekend
Weekend
30.8300 31.7200 29.6800 29.8000 258,900
32.5600 32.6900 30.3400 30.4600 348,600
35.6400 35.9300 32.7300 32.8700 724,800
36.1600 36.6800 35.1500 35.2800 227,700
No trading
Weekend
Weekend
35.6800 36.7700 35.4900 36.6000 156,500
36.8000 36.8000 35.5400 36.1300 225,000
35.4800 37.0100 34.8600 36.7200 267,500
34.1200 35.3300 33.4300 35.1800 301,100
33.8000 34.3000 32.9200 33.6300 236,000
Weekend
Weekend
34.5800 34.5800 33.2900 34.0700 250,000
35.3200 35.9000 34.7500 34.8000 192,100
35.3800 36.1300 35.0000 35.4200 171,500
36.0000 37.0000 35.1900 35.3300 553,800
34.3800 36.1200 33.7500 35.2800 383,900
Weekend
Weekend
33.8600 35.6200 33.8600 34.3800 341,500
33.5400 34.0000 32.9000 33.5300 215,000
32.8800 34.5700 32.6400 33.8400 384,500
30.0000 33.0800 30.0000 32.1300 484,800
32.5700 33.3300 29.8300 30.0100 304,500
Weekend
Weekend
20 · 8-K/A After-hours · 16:05 ET 8-K/A ↗
30.0800 33.1700 29.7900 32.9500 559,100
19 · 10-Q After-hours · 16:15 ET 10-Q ↗ 18 · 8-K After-hours · 16:11 ET 8-K ↗
27.4000 30.4500 26.7700 29.9500 729,200
27.1200 27.3900 26.7400 27.0600 113,100
26.8100 27.3200 26.2400 27.2700 213,400
26.6800 27.1000 26.3200 26.7400 105,700
Weekend
Weekend
27.0700 27.1200 26.3600 26.6800 119,800
26.7800 26.9800 26.1800 26.4500 100,100
26.3200 26.9200 26.1800 26.5400 113,300
25.5300 26.4900 25.1900 26.4400 90,800
25.3100 25.5900 24.7200 25.3600 193,300
Weekend
Weekend
25.8800 26.0300 24.6600 25.1100 101,400
25.1800 26.1500 25.0200 26.0600 55,700
25.7500 25.8700 24.5000 25.1100 153,300
25.9600 26.2100 25.1600 25.5700 86,400
25.8000 26.5700 25.8000 25.9100 79,200
Weekend
Weekend
25.3000 26.5300 24.8500 25.5500 142,100
26.0700 26.0800 25.0500 25.2200 191,300
26.1700 26.2000 25.5600 26.0400 128,300
25.0000 26.6400 24.8700 26.4700 112,000
26.8100 27.0000 24.9800 25.0600 112,700
Weekend
Weekend
26.1200 28.1500 25.3600 26.8100 312,800
26.7200 26.7800 25.4300 25.8400 309,400
26.6700 27.0200 26.2500 26.7300 124,800
26.9900 27.3100 26.7300 26.7600 104,900
27.1500 27.4000 26.2700 26.9600 113,000
Weekend
Weekend
27.8600 27.9900 26.4500 27.4000 170,000
28.6100 29.2400 27.6300 27.8700 179,000
28.3000 29.2000 27.9000 28.7300 136,000
28.9700 29.9500 28.6000 28.9700 177,800
27.7400 29.0000 27.2000 28.9000 179,400
Weekend
Weekend
No trading
26.7500 27.7700 26.4100 27.7400 199,300
27.4400 27.6600 26.0600 26.6900 204,100
26.9600 28.3700 26.8900 27.4800 249,400
26.7600 27.1300 25.9500 26.9600 236,000
Weekend
Weekend
24.2600 27.0500 24.2600 26.7400 1,589,300
25.5800 25.9500 24.0100 24.2600 271,000
27.0000 27.9700 25.3300 25.6200 264,200
24.9100 27.1300 24.9000 26.8000 253,700
24.5000 26.1400 24.4400 25.1500 286,800
Weekend
Weekend
No trading
24.6000 25.9300 24.2200 24.4400 298,900
23.2500 24.5100 23.2000 24.1500 133,800
23.2300 23.4200 22.5800 23.3300 116,900
23.6700 24.1500 23.0700 23.3400 173,200
Weekend
Weekend
22.6000 23.6900 22.3500 22.9600 144,400
22.2600 22.6200 21.8000 22.5300 290,500
22.5000 23.9900 22.1800 22.2600 195,500
23.4000 23.8200 22.2000 22.7200 243,800
23.4700 23.6600 22.2400 22.5600 153,100
Weekend
Weekend
17 · 8-K After-hours · 16:00 ET 8-K ↗
24.0000 24.0000 22.2400 22.9000 130,600
24.5700 25.0500 23.8800 24.1100 215,200
24.6000 24.6500 24.0000 24.5700 181,000
26.9100 27.1900 24.4000 24.4900 276,600
28.2500 28.7500 26.5800 26.9200 219,000
Weekend
Weekend
27.7300 28.5200 27.2500 27.6600 138,800
27.3000 27.7800 27.0000 27.7300 115,600
28.6100 28.9100 27.0800 27.4000 149,000
16 · 8-K After-hours · 16:10 ET 8-K ↗
28.3300 29.0500 27.4100 28.7500 244,700
15 · 424B5 Next filing day · accepted 22 May, 19:39 ET 424B5 ↗
No trading
Weekend
Weekend
14 · 424B5 After-hours · 16:01 ET 424B5 ↗
28.6100 31.8900 27.6400 28.3400 893,900
13 · 8-K Pre-market · 07:15 ET 8-K ↗
26.0500 26.6000 25.7600 26.5000 63,900
26.7000 27.1200 26.0600 26.2600 121,800
27.0200 27.3100 26.4900 26.5200 116,200
28.8800 28.8900 26.4200 27.4200 204,100
Weekend
Weekend
29.9400 29.9900 28.5200 28.6500 122,200
31.6000 32.4600 30.0400 30.3000 69,500
30.5800 31.9400 30.3100 31.7200 66,500
30.1900 30.9900 30.1500 30.8200 60,800
29.4400 30.8300 28.9000 30.4100 87,300
Weekend
Weekend
30.5400 31.5000 29.1600 29.7400 143,400
12 · 10-Q After-hours · 16:17 ET 10-Q ↗ 11 · 8-K After-hours · 16:12 ET 8-K ↗
31.2200 31.8900 30.7200 30.9300 163,700
29.5500 31.6200 29.4900 31.3600 156,300
27.8300 29.7800 27.8300 29.5500 534,700
27.3200 29.0000 27.3200 27.8200 341,300
Weekend
Weekend
26.8300 27.9000 26.5500 27.3700 70,800
26.6300 26.9500 26.1500 26.9500 56,200
26.9500 28.2100 25.9700 26.3300 65,300
27.5200 28.2500 26.8300 27.0000 55,500
27.8800 28.5700 27.3900 27.5200 49,300
Weekend
Weekend
28.2300 28.3100 27.6900 27.8700 57,000
28.3300 28.6000 27.7000 28.3300 79,000
10 · DEFA14A After-hours · 16:22 ET DEFA14A ↗ 9 · DEF 14A After-hours · 16:12 ET DEF 14A ↗
27.4000 28.8900 27.2500 28.3000 81,000
28.2000 28.8800 26.6200 26.9500 183,000
29.2300 29.2500 27.6200 28.1300 96,700
Weekend
Weekend
29.9100 30.1900 28.7900 29.2400 230,400
29.7400 30.0500 29.0900 29.3200 175,000
29.4200 30.0600 29.2800 29.8100 62,100
29.5200 30.0500 29.2000 29.4400 81,100
28.3200 30.1400 28.3200 29.2400 143,200
Weekend
Weekend
29.9900 30.7200 28.2600 28.4200 138,900
29.1000 30.1800 29.0000 29.8500 113,400
29.7200 29.8300 28.8200 29.3500 115,700
28.9600 29.3700 28.1000 28.5300 67,400
29.9400 30.1800 29.0000 29.2200 114,900
Weekend
Weekend
No trading
28.6300 29.7500 28.4000 29.0100 37,900
28.0500 30.0200 28.0500 29.4300 77,700
27.0100 28.1400 26.6600 27.7500 97,600
8 · 8-K After-hours · 17:32 ET 8-K ↗
27.8400 28.1200 26.3200 26.6400 72,600
Weekend
Weekend
28.5700 28.8900 27.2500 27.7000 70,500
28.6500 29.5300 28.4900 28.8700 65,200
28.4500 29.5000 28.4000 28.6700 58,400
28.1000 28.4500 27.5000 28.2300 70,500
29.1000 30.1800 27.5300 28.5800 98,600
Weekend
Weekend
30.1300 30.1300 27.6500 28.4600 83,900
7 · S-3 After-hours · 17:04 ET S-3 ↗ 6 · 10-K After-hours · 16:15 ET 10-K ↗ 5 · 8-K After-hours · 16:10 ET 8-K ↗
27.5200 28.3100 27.1200 27.5100 57,000
28.0500 28.3100 27.5100 27.5200 42,000
28.8000 28.9000 28.0100 28.5300 57,700
28.5600 29.1400 28.2000 28.7400 59,400
Weekend
Weekend
28.5200 29.1000 27.7500 28.1200 67,400
29.0100 29.0100 27.6300 28.3000 80,300
29.0500 29.5300 28.6500 29.2100 60,200
29.1700 29.9100 29.0000 29.6000 83,200
28.0100 29.7200 28.0100 29.1300 103,300
Weekend
Weekend
27.1900 29.0000 27.0000 28.2700 90,600
29.2900 29.5400 27.0000 27.6600 168,700
28.9200 30.0800 28.3400 29.7900 66,000
28.7000 29.0000 27.8700 28.8000 55,100
29.3300 30.2500 29.0000 29.6800 62,200
Weekend
Weekend
29.0700 30.6200 28.6400 29.8400 129,800
29.5600 29.7700 28.4900 29.5900 90,200
29.6900 30.4000 29.1600 29.3400 77,100
30.1600 30.2000 29.3000 29.6400 96,800
28.4000 30.1000 28.2200 29.9500 137,300
Weekend
Weekend
26.0300 29.0100 26.0200 28.7500 142,900
29.2600 29.4600 25.7200 25.9700 400,200
27.7600 28.9300 27.7600 28.8900 72,900
26.6900 27.8600 26.0000 27.8200 78,200
No trading
Weekend
Weekend
26.0900 27.3200 25.9200 26.6600 86,700
27.4000 27.4000 25.4700 26.0900 101,600
27.3900 27.5000 26.0800 27.3600 65,100
26.9100 27.4800 26.3200 27.4800 54,800
26.7500 27.4800 26.0000 26.9000 69,900
Weekend
Weekend
25.6200 26.8000 25.5800 26.2200 56,000
27.2200 27.8400 25.1400 25.3900 98,900
29.8000 30.3400 26.6000 27.0500 160,000
26.3700 28.3500 26.1500 28.2400 118,700
25.5000 26.5900 25.2500 26.3700 68,700
Weekend
Weekend
25.6600 26.0500 24.6800 25.7800 88,600
26.2400 26.4500 25.0100 25.7100 83,200
27.6000 27.7700 26.3000 26.4200 76,900
27.4000 28.6400 26.9500 27.5200 102,000
28.0500 28.5900 26.9300 27.3400 96,800
Weekend
Weekend
27.6100 28.3500 27.3600 28.0100 84,500
26.3300 27.9300 26.3300 27.6200 70,200
26.8000 27.7500 25.9300 26.3500 116,300
28.7200 29.0000 26.7700 26.8000 268,100
No trading
Weekend
Weekend
30.0600 30.3400 29.1600 29.3700 131,400
32.3100 32.3100 29.7800 29.9100 82,800
31.2900 32.0500 31.1000 32.0400 36,400
30.9600 31.6200 30.3600 31.6000 67,200
31.5600 31.9000 30.1800 30.9300 100,200
Weekend
Weekend
31.6600 33.7100 31.2600 31.7400 110,700
31.0700 31.5800 29.3100 31.5600 167,100
30.6600 31.5500 30.1900 31.3900 167,400
32.2400 32.9500 30.4000 30.5800 93,000
33.7100 33.7100 32.2300 32.3100 137,200
Weekend
Weekend
34.1500 34.6900 32.7200 33.7500 82,100
No trading
32.2700 34.1300 32.0000 34.0100 91,400
33.3300 33.4100 31.7300 32.1300 136,500
33.3300 33.9700 32.6700 33.3200 114,900
Weekend
Weekend
33.7500 33.7800 32.6700 33.6200 88,100
No trading
32.9400 34.0300 32.3600 34.0000 72,700
36.0000 36.5000 31.5100 32.7300 187,200
35.6500 38.9900 35.0300 36.1800 600,000
Weekend
Weekend
32.5000 35.2600 32.3500 35.2600 281,800
32.8100 33.0000 32.2500 32.3500 179,400
33.6000 33.8000 32.2600 32.5800 87,800
34.2500 34.8900 33.5000 33.5000 159,300
36.4300 36.4300 34.2200 34.6000 58,000
Weekend
Weekend
35.8200 36.9200 35.2500 36.1000 186,900
35.8400 36.5000 35.0500 35.8800 60,300
36.1100 37.5000 35.6700 35.8700 120,000
36.1900 38.8200 35.5800 35.6700 162,400
4 · 8-K After-hours · 16:17 ET 8-K ↗
35.6400 35.9800 34.4200 35.3800 193,200
Weekend
Weekend
35.5600 36.0000 34.9200 35.0100 29,100
35.1900 35.8200 34.5200 35.2700 45,800
34.4100 35.6100 34.4100 35.0000 40,200
33.8400 34.9600 33.3900 33.9900 84,700
37.7200 39.4700 33.2800 33.8900 146,400
Weekend
Weekend
37.4900 37.8000 36.9600 37.7900 28,300
No trading
37.7800 37.9300 36.7000 37.1900 61,200
38.0200 38.1400 36.8500 37.4200 76,800
38.4500 39.6500 37.3200 37.9300 79,500
Weekend
Weekend
3 · 424B3 After-hours · 16:46 ET 424B3 ↗
36.3300 38.7000 35.5000 38.5000 224,000
38.7700 39.7100 36.6300 36.7300 149,600
36.0700 38.3700 35.1900 38.0000 269,800
36.0300 36.3600 35.0000 35.8900 96,400
36.3200 37.6700 35.6700 36.3300 178,300
Weekend
Weekend
34.6000 37.7100 34.0000 36.7100 386,600
35.5300 35.7000 34.2500 35.5200 197,700
33.3100 36.2300 32.9700 35.8500 168,100
32.1100 33.2600 31.0200 33.1300 65,300
2 · 10-Q After-hours · 16:15 ET 10-Q ↗ 1 · 8-K After-hours · 16:10 ET 8-K ↗
31.7000 32.4000 31.5000 32.0700 71,900
Weekend
Weekend
30.8900 31.7700 30.6000 31.2000 127,500
32.1100 32.6800 30.9200 31.2100 84,200
31.7700 32.3600 31.2300 32.1100 92,200
30.8000 32.3700 30.8000 31.4300 137,300
31.0600 31.6000 30.0000 31.1700 95,200
Weekend
Weekend
30.3200 31.8000 30.3000 31.0500 72,100
30.6800 31.7600 30.1200 30.1200 61,400
30.8900 32.4400 30.4900 30.9900 127,200
29.9000 31.3300 29.5300 30.8900 93,400
29.2400 30.2400 28.8200 29.8000 111,200
Weekend
Weekend
27.6000 29.7300 27.6000 29.2400 74,600

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.

20 8-K/A 8-K/A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
19 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
15 424B5 424B5 (opens SEC filing in a new tab) Next filing day · accepted 22 May, 19:39 ET Summarise
14 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:15 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
10 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
9 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:32 ET Summarise
7 S-3 S-3 (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
6 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
3 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise