Assembly Biosciences, Inc ASMB

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

Paper trade (simulated — no real money)

Fill: USD 25.5500 · FX 1 USD = 1.290100 SGD · about SGD 32.9621 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 19.50 → 25.55 · 31.0%
38.50028.20017.900 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 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
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
25 · 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
24 · 8-K After-hours · 16:10 ET 8-K ↗
28.3300 29.0500 27.4100 28.7500 244,700
23 · 424B5 Next filing day · accepted 22 May, 19:39 ET 424B5 ↗
No trading
Weekend
Weekend
22 · 424B5 After-hours · 16:01 ET 424B5 ↗
28.6100 31.8900 27.6400 28.3400 893,900
21 · 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
20 · 10-Q After-hours · 16:17 ET 10-Q ↗ 19 · 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
18 · DEFA14A After-hours · 16:22 ET DEFA14A ↗ 17 · 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
16 · 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
15 · S-3 After-hours · 17:04 ET S-3 ↗ 14 · 10-K After-hours · 16:15 ET 10-K ↗ 13 · 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
12 · 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
11 · 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
10 · 10-Q After-hours · 16:15 ET 10-Q ↗ 9 · 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
28.2700 28.7500 27.3900 27.5000 36,800
28.2000 28.6700 27.0700 28.1500 145,100
30.5000 30.7800 28.2500 28.4100 120,800
29.8400 31.1200 29.4200 30.7900 182,800
Weekend
Weekend
28.9200 30.2000 28.8200 29.4500 291,300
28.8300 29.4000 28.3400 29.0800 190,800
28.1100 28.5400 27.5000 28.4400 187,000
8 · S-3 After-hours · 16:20 ET S-3 ↗
27.6700 29.2000 26.7200 28.3900 159,700
26.5100 28.0000 25.7500 27.6600 270,500
Weekend
Weekend
26.9600 27.1000 25.7200 26.5100 177,600
25.7100 27.1700 23.8400 26.8200 192,900
24.0700 26.0700 23.2100 25.5000 151,700
24.6100 24.6800 23.2600 23.8600 77,600
23.5600 24.5600 23.4000 24.4800 84,000
Weekend
Weekend
23.7700 23.8600 23.1900 23.3200 66,700
24.6500 24.9400 23.6300 23.7000 93,200
25.5200 26.4000 24.6000 24.6100 150,700
24.5000 25.7600 24.0000 25.6000 125,700
24.7300 25.4700 24.1100 24.6300 127,200
Weekend
Weekend
25.5200 25.6000 24.3400 24.6700 68,000
25.2600 27.1000 24.8400 25.5300 111,900
26.7900 26.8400 25.6100 25.6600 86,500
24.8400 26.1600 24.8400 25.9900 249,100
24.4800 25.1400 23.7000 24.7800 236,400
Weekend
Weekend
22.1300 24.7600 21.9100 24.4600 753,100
20.9100 22.2900 20.7500 22.2700 144,300
20.4300 20.9800 20.2300 20.6200 159,400
21.0400 21.3400 20.4400 20.5500 55,500
21.8600 21.9600 21.1100 21.1900 79,800
Weekend
Weekend
22.4900 22.9300 21.6700 21.8500 67,500
22.0500 22.8500 22.0100 22.5900 109,800
23.2900 23.6100 22.2000 22.2600 67,900
23.3100 23.5200 22.6000 23.1500 106,800
25.0500 25.3200 22.3600 23.3200 289,300
Weekend
Weekend
23.3800 24.1700 22.8500 23.8200 237,000
23.8200 23.8200 22.5000 23.3100 172,500
24.1100 24.2900 23.5400 23.9000 130,300
24.2200 24.8900 23.4300 24.1300 135,200
No trading
Weekend
Weekend
25.3100 25.4300 24.0000 24.7000 122,400
25.9100 26.1400 25.2500 25.5000 147,700
25.6200 26.1300 25.2000 25.8900 227,400
26.7400 26.7400 24.9800 25.6200 154,800
27.0600 27.1600 26.2500 26.6200 78,600
Weekend
Weekend
26.6400 27.1700 26.5000 26.9300 101,400
26.1300 26.7700 26.0100 26.6500 186,900
25.4300 26.2500 24.9300 26.1500 251,900
25.3000 25.5900 24.8000 25.2200 187,100
25.5300 26.2400 25.3000 25.7600 102,200
Weekend
Weekend
25.1500 25.6200 24.6800 25.4400 91,500
24.4200 25.1100 23.7100 24.9600 135,300
23.9900 24.9400 23.6700 24.7500 196,000
23.6200 23.9900 22.8900 23.9900 127,200
7 · 8-K After-hours · 17:25 ET 8-K ↗
24.3300 24.7100 22.5000 23.6000 227,300
6 · 424B5 Pre-market · 07:02 ET 424B5 ↗ 5 · 424B5 Pre-market · 06:05 ET 424B5 ↗
Weekend
Weekend
21.8000 23.9700 21.0000 23.9700 480,900
4 · 8-K Pre-market · 08:24 ET 8-K ↗ 3 · S-3MEF After-hours · 21:42 ET S-3MEF ↗
19.1300 22.5000 19.1300 21.2200 145,400
2 · 10-Q After-hours · 16:16 ET 10-Q ↗ 1 · 8-K After-hours · 16:10 ET 8-K ↗
18.6800 19.4300 18.5000 19.4300 57,800
19.0900 19.2100 18.4100 18.8600 68,100
18.3000 19.4300 17.9800 19.4000 52,500
Weekend
Weekend
17.7500 18.9800 16.9000 18.4000 61,500
18.0900 18.3900 17.5500 17.9300 10,700
18.6200 18.9300 17.7300 17.9000 16,100
19.5000 19.5000 18.2400 18.3600 18,500
18.5000 19.5000 18.3000 19.5000 19,400
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.

25 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise
24 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
23 424B5 424B5 (opens SEC filing in a new tab) Next filing day · accepted 22 May, 19:39 ET Summarise
22 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:15 ET Summarise
20 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
18 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
17 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:32 ET Summarise
15 S-3 S-3 (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
14 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
11 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
10 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
8 S-3 S-3 (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:25 ET Summarise
6 424B5 424B5 (opens SEC filing in a new tab) Pre-market · 07:02 ET Summarise
5 424B5 424B5 (opens SEC filing in a new tab) Pre-market · 06:05 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:24 ET Summarise
3 S-3MEF S-3MEF (opens SEC filing in a new tab) After-hours · 21:42 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise