MBX Biosciences, Inc MBX

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

Paper trade (simulated — no real money)

Fill: USD 48.5000 · FX 1 USD = 1.277900 SGD · about SGD 61.9781 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 17.00 → 48.50 · 185.3%
70.70043.85017.000 1,2,3 4 5 6 7 8 9,10,11 12,13 14,15 16 17 18 19 20 21,22 23 24 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
50.1500 50.1500 47.5000 48.5000 581,554
24 · 8-K After market open · 12:11 ET 8-K ↗
53.5000 54.9900 50.2500 50.4600 631,700
53.8700 56.2000 53.4300 53.9300 400,400
52.5600 55.0000 51.0500 53.5000 808,000
49.7000 53.0550 49.7000 52.4800 522,200
Weekend
Weekend
50.6900 50.8800 49.2250 49.6100 818,900
49.1500 51.3000 48.7300 50.7100 601,800
48.0200 49.5400 47.6000 48.8200 994,400
52.0400 53.0350 48.9100 49.0000 769,000
53.2400 54.0300 51.8900 52.0200 991,600
Weekend
Weekend
53.2600 53.8200 51.8850 53.2400 538,800
53.6600 53.7700 50.4200 53.2500 413,800
56.3800 58.5000 53.3600 54.5400 357,000
58.7500 59.2250 55.3400 56.9200 366,600
58.3300 59.2600 56.4150 58.5400 583,200
Weekend
Weekend
59.2800 61.1200 56.9000 58.5100 637,300
58.4700 60.2000 56.1500 56.5500 434,100
58.1900 59.4000 56.0950 58.6200 523,800
57.2700 58.2400 56.5500 57.7500 357,100
52.8600 58.4900 52.5950 57.5400 439,500
Weekend
Weekend
55.8300 56.0000 52.3200 53.6300 563,500
57.5600 57.7200 54.4100 55.3900 639,000
61.8500 61.8500 57.8200 57.8900 352,400
61.1400 63.4500 60.8400 61.9800 433,400
63.4600 64.6100 59.9700 60.9400 903,300
Weekend
Weekend
64.0000 64.0450 61.4000 62.9100 932,400
62.5000 65.0000 62.5000 63.8900 969,800
61.3400 62.7500 59.4900 61.5700 1,159,800
58.7900 61.1950 58.3940 61.0800 652,600
59.3500 60.2200 58.8700 59.4900 323,700
Weekend
Weekend
61.7500 61.9400 58.4200 59.0200 306,200
62.4300 63.0150 60.6500 60.9400 457,300
63.2900 64.0400 61.2850 62.9100 315,700
60.8500 64.1700 60.6600 62.9900 266,200
No trading
Weekend
Weekend
61.0000 62.7300 60.5950 61.7200 271,800
60.9000 62.6100 59.8400 61.4200 292,500
61.4000 62.4500 58.8000 60.8900 352,300
61.4200 62.8800 60.2150 60.9300 416,100
62.2500 63.0400 59.4700 61.6000 518,300
Weekend
Weekend
66.1400 66.1400 62.9900 63.0000 307,600
66.7300 66.9000 64.5000 66.3900 263,500
23 · 8-K Pre-market · 08:34 ET 8-K ↗
68.5600 68.8300 66.2700 66.7600 214,700
67.6400 69.5000 67.6400 68.6200 274,000
66.2300 67.1550 64.0000 66.3900 531,000
Weekend
Weekend
67.8600 67.8600 65.5910 66.3300 466,300
67.0000 68.4900 65.3960 66.3500 422,500
67.5300 68.7600 65.2500 68.4000 562,300
66.4000 69.0500 65.7950 66.5200 560,700
68.2800 69.9400 67.5800 68.2500 461,200
Weekend
Weekend
67.0000 68.8400 65.0100 68.5700 503,100
66.9700 68.4100 65.5000 67.0800 334,900
66.8400 67.8000 66.0000 66.9700 331,400
67.4600 68.4900 65.1100 66.0100 359,700
67.7100 68.2150 65.3000 66.1500 325,500
Weekend
Weekend
69.6900 70.0000 65.2550 67.8200 545,500
66.1900 68.8600 64.5000 67.1100 528,700
22 · 10-Q Pre-market · 08:06 ET 10-Q ↗ 21 · 8-K Pre-market · 08:03 ET 8-K ↗
70.0000 72.6400 67.0390 67.4800 487,500
64.7800 71.1200 64.7400 70.7000 696,000
65.9900 66.4850 62.6800 64.4100 390,600
Weekend
Weekend
67.0000 69.4000 64.5000 65.9300 566,300
64.8400 66.6600 62.9850 66.4600 548,000
61.7800 65.9890 60.5800 63.9600 564,700
61.9800 62.0050 58.7850 60.0600 625,700
62.2400 64.7750 60.4000 61.3000 303,800
Weekend
Weekend
64.2200 66.6600 60.8510 62.0000 500,900
58.0900 63.6400 57.3550 63.5700 537,700
60.1800 60.6450 57.2300 58.3000 696,100
60.5200 61.1700 58.3700 60.2800 698,400
63.1300 63.8300 59.6100 60.1400 646,700
Weekend
Weekend
55.9300 63.0900 55.4150 62.9200 898,400
59.1700 61.2690 57.4000 58.3200 835,000
55.7500 60.7000 54.3350 60.6750 1,078,400
52.8200 58.6200 52.5100 56.5900 1,383,200
20 · 8-K After-hours · 16:46 ET 8-K ↗
60.0000 60.8800 56.6400 60.0400 643,300
Weekend
Weekend
64.9000 65.4350 60.0110 61.0500 852,000
62.2500 66.5500 61.7800 65.7100 747,500
62.4600 64.3200 61.0400 61.7400 1,469,500
58.1100 62.2500 56.1700 62.0000 756,600
58.0200 59.6300 57.0500 57.7000 603,000
Weekend
Weekend
No trading
56.0400 58.3200 55.1600 57.8000 828,700
55.2000 58.5000 55.0450 55.9200 1,054,500
54.2400 57.3800 53.4650 55.2000 1,072,400
52.6350 55.0000 52.1200 53.8500 1,178,000
Weekend
Weekend
50.0000 53.5100 49.6900 52.3100 2,888,500
48.5900 52.5000 48.1700 50.3700 1,232,200
46.2700 49.2500 45.4980 48.4000 928,700
42.4300 46.8950 41.9910 46.3900 669,300
43.2500 46.0100 43.2500 43.9100 660,800
Weekend
Weekend
No trading
42.8400 43.4900 40.7650 43.0300 832,100
40.1200 42.2300 39.3450 41.5900 676,800
39.0500 42.0800 37.8350 40.0900 1,144,900
35.8000 40.0000 35.5800 38.9800 1,258,800
Weekend
Weekend
32.0000 36.8380 32.0000 35.5100 2,156,500
19 · 8-K Pre-market · 07:05 ET 8-K ↗
31.3300 37.2700 30.5100 37.2500 2,732,300
29.4700 31.1500 29.2000 30.9900 971,400
29.6800 30.5600 28.3500 29.8700 324,300
31.0000 31.2600 28.0000 29.0000 739,100
Weekend
Weekend
30.5900 30.6850 29.4100 30.2800 580,400
18 · 8-K Pre-market · 07:52 ET 8-K ↗
30.0700 31.7400 29.7800 30.9100 543,900
30.5300 30.8300 29.5500 30.0500 466,200
30.2900 31.3500 29.5700 30.7000 609,700
31.3500 32.0300 29.8700 30.6500 347,800
Weekend
Weekend
31.8300 32.0640 30.8000 31.4700 821,400
31.8000 32.8600 31.0400 31.9000 377,400
31.8100 33.0600 31.2400 31.8800 511,000
32.2200 32.6050 31.0750 31.7500 247,700
No trading
Weekend
Weekend
31.9100 32.8900 31.2100 31.8500 436,100
31.6500 32.3900 30.8350 31.7900 460,300
30.7500 31.8650 30.3500 31.4300 816,600
30.6500 31.1600 29.6000 30.3900 610,100
32.5000 33.1080 30.5800 30.9800 917,300
Weekend
Weekend
34.8700 35.2700 32.0000 32.4500 606,400
37.1000 38.0900 34.8500 35.3600 840,000
37.3400 38.3700 35.9400 37.5000 811,900
40.0800 40.6000 35.8650 36.9800 1,052,700
41.2600 45.8500 39.4000 40.0800 1,886,000
17 · 8-K Pre-market · 07:04 ET 8-K ↗
Weekend
Weekend
16 · DEFA14A After-hours · 16:05 ET DEFA14A ↗
34.9350 41.2800 34.5550 40.9650 1,883,000
15 · 8-K After market open · 10:33 ET 8-K ↗
32.0000 34.9000 30.7500 34.7100 928,500
14 · 10-Q Pre-market · 09:03 ET 10-Q ↗
30.0500 32.3300 29.0600 32.1200 465,500
29.8000 30.6450 28.8200 29.6000 312,700
29.5600 30.0300 28.8600 29.4400 344,800
Weekend
Weekend
30.1800 32.0300 29.7600 29.7800 442,100
28.8800 30.2600 28.7730 30.2200 300,000
28.9500 29.6700 27.5600 28.6100 296,700
31.7900 32.1900 28.9600 29.0400 874,400
31.9400 33.4350 31.1600 31.9700 386,300
Weekend
Weekend
33.3300 33.3300 30.8150 31.9600 448,100
33.5800 34.4000 31.2000 33.3900 557,300
33.4900 34.1160 32.3300 33.5800 341,800
13 · DEFA14A Pre-market · 08:05 ET DEFA14A ↗ 12 · DEF 14A Pre-market · 08:04 ET DEF 14A ↗
34.0100 34.2000 31.7050 33.2400 436,300
33.4900 34.0800 32.0100 33.7800 522,400
Weekend
Weekend
33.8500 35.0000 33.3100 33.7700 306,800
32.8700 33.4600 32.4500 33.2200 217,000
32.8100 33.5000 31.8250 32.9600 317,900
32.9500 33.7500 32.0600 32.8100 462,200
30.9800 32.9400 30.7600 32.8100 300,100
Weekend
Weekend
33.2400 33.8000 30.7600 31.0000 284,300
31.4500 33.5000 31.2650 32.8600 467,500
31.5200 32.7650 30.4000 31.6600 454,000
31.0600 31.2050 29.3200 30.1900 1,225,200
32.9400 33.2000 31.2500 31.3000 436,500
Weekend
Weekend
No trading
31.0000 33.7000 30.8700 32.9900 601,700
30.3000 33.0000 30.2900 32.2900 406,300
27.8500 30.2900 27.7800 29.8500 522,400
28.5000 28.9400 26.1400 26.9200 452,900
Weekend
Weekend
28.3400 29.2500 27.8300 28.5000 353,100
28.1400 29.2350 27.9950 28.2900 236,900
28.0500 29.4000 28.0500 28.9600 337,200
27.9600 28.4500 26.8350 27.8200 378,500
29.3300 29.8800 27.9650 28.1400 548,800
Weekend
Weekend
28.4300 29.0000 27.4000 28.6800 670,800
28.4000 28.9150 27.2500 28.4300 434,400
29.5500 29.5500 27.6600 28.7000 494,000
29.3800 29.7900 28.4400 29.7400 480,300
30.1900 31.2000 29.2000 29.8000 581,000
Weekend
Weekend
27.8100 28.9900 26.4200 28.0000 728,500
11 · S-3ASR After-hours · 16:07 ET S-3ASR ↗
28.3900 28.6600 26.5400 27.9500 750,100
10 · 10-K Pre-market · 08:05 ET 10-K ↗ 9 · 8-K Pre-market · 08:02 ET 8-K ↗
28.5300 29.0500 27.3800 28.9400 447,300
28.0000 29.9050 28.0000 29.0100 623,400
30.0800 30.5300 27.8500 27.9400 824,200
8 · 8-K Pre-market · 08:03 ET 8-K ↗
Weekend
Weekend
31.2800 32.2300 30.0100 30.5500 591,600
30.9700 31.9700 30.0100 31.4350 550,100
30.9100 32.4500 30.2550 31.3100 463,400
31.9000 32.1900 30.3300 30.5400 508,000
31.1600 33.4650 31.1600 32.9700 605,500
Weekend
Weekend
33.2100 34.2600 31.5300 32.5500 1,171,700
7 · 8-K Pre-market · 07:54 ET 8-K ↗
35.5700 35.7000 34.0100 35.0400 396,400
37.2900 37.9900 35.3900 35.6400 479,100
37.2400 38.2450 36.1300 36.7300 455,400
35.0800 37.4800 34.0040 36.7500 416,800
Weekend
Weekend
37.2600 37.2600 34.3050 34.7900 452,400
39.7500 40.1000 36.2500 37.2600 952,000
39.0900 40.9700 38.8100 40.3100 472,000
38.1900 40.2500 37.5200 39.3800 511,200
No trading
Weekend
Weekend
38.0000 40.0900 37.6900 38.0900 553,300
35.7000 38.8600 34.7100 38.0000 530,700
38.1800 39.2060 34.0600 35.0000 505,400
37.1600 37.9900 35.2700 37.6800 380,000
37.5100 38.1250 36.4900 37.0300 332,400
Weekend
Weekend
36.7700 38.1200 36.6300 37.6700 345,400
6 · 8-K After-hours · 16:27 ET 8-K ↗
37.4300 38.7100 35.7650 36.0500 494,200
39.8200 41.3900 37.1370 38.3700 752,400
39.2000 40.5540 37.7500 39.2200 2,739,000
37.0200 39.6950 37.0200 39.0700 636,600
Weekend
Weekend
36.1300 38.1000 36.1300 36.8500 949,900
35.9100 36.9200 35.0000 36.8400 316,500
36.3400 37.2100 35.1450 35.8300 360,200
36.9700 37.8900 35.1100 36.0700 474,900
37.3200 37.5550 35.5600 36.6000 616,500
Weekend
Weekend
42.0000 42.5600 37.0200 37.8500 860,600
41.4800 43.9800 40.1000 42.3900 843,500
5 · 8-K Pre-market · 08:04 ET 8-K ↗
43.0000 43.4600 39.2700 41.0900 786,400
39.7800 43.9100 39.6500 43.1400 774,400
No trading
Weekend
Weekend
41.2300 42.0000 39.7000 40.5300 504,300
42.9400 44.8900 40.4780 40.9100 1,060,700
36.3100 43.1800 36.3000 42.9900 1,425,100
36.4200 36.5900 35.0300 36.3100 816,100
32.2300 36.4900 31.5800 36.4700 1,226,900
4 · 8-K Pre-market · 06:02 ET 8-K ↗
Weekend
Weekend
30.9600 32.0550 30.5150 31.6600 418,800
32.2100 33.0000 29.7900 30.7200 424,700
30.0500 34.4000 29.5370 32.5500 913,700
29.4300 30.7000 27.8500 28.7000 490,800
30.7600 31.0000 27.8400 29.3100 748,600
Weekend
Weekend
31.6000 31.6100 29.6300 30.5500 564,100
No trading
30.9700 32.0500 30.7250 31.5400 362,300
31.1200 31.7400 30.6150 30.9000 315,500
30.7500 31.5580 30.5300 31.0700 364,500
Weekend
Weekend
32.2600 32.2600 30.1100 30.9000 429,600
No trading
32.0600 32.6400 31.0000 32.1100 230,500
34.0700 35.1000 32.0000 32.2000 683,700
30.9300 35.5500 30.5200 34.8000 989,400
Weekend
Weekend
29.3300 31.6100 28.7600 30.4200 4,012,600
27.9700 29.1900 27.7700 28.6700 1,155,400
27.7500 28.3000 27.1350 27.7000 649,400
28.1900 28.4950 27.0400 27.7500 559,100
30.0000 30.1700 28.1480 28.3800 495,800
Weekend
Weekend
28.7600 30.0500 27.9300 29.8600 450,400
28.9700 29.0400 27.8650 28.4300 823,700
28.6200 30.0430 28.2390 28.8200 717,200
31.1600 31.9600 28.5450 28.6800 985,400
32.5500 33.3100 31.3000 31.3900 613,400
Weekend
Weekend
29.9800 32.0700 29.9800 31.9700 823,700
28.9700 32.9990 28.0120 30.5400 2,132,100
33.1100 34.6000 32.6770 33.9400 840,300
33.4000 34.0400 31.8500 33.1600 791,600
34.0700 34.5800 32.8500 33.0000 659,600
Weekend
Weekend
33.9200 34.8300 33.7200 34.4900 255,200
No trading
32.0200 34.1700 31.6700 33.8200 546,000
30.4800 32.1700 30.0000 31.6000 683,400
27.4400 32.1150 27.4400 31.2400 1,022,900
Weekend
Weekend
26.8300 27.9000 26.0000 27.0800 772,600
27.7600 28.7400 26.7900 27.0300 729,900
26.3600 28.1330 26.0400 27.3900 655,500
25.3600 26.6200 25.1100 26.3600 323,800
24.8000 26.6500 24.6800 25.6100 534,500
Weekend
Weekend
23.6100 25.9000 23.0700 24.7900 617,700
24.4200 25.0300 23.6100 24.0700 696,000
24.9300 25.6600 24.3400 24.6000 538,500
24.4500 25.4900 23.9260 24.9100 584,500
26.2000 26.2000 23.5300 24.4900 870,700
Weekend
Weekend
21.9100 25.6950 21.9000 25.5700 907,500
22.5300 25.6750 22.3600 24.7400 1,289,700
3 · S-3 Pre-market · 08:37 ET S-3 ↗ 2 · 10-Q Pre-market · 08:08 ET 10-Q ↗ 1 · 8-K Pre-market · 08:06 ET 8-K ↗
20.7000 22.7000 20.3400 22.5500 654,300
20.7800 22.1600 20.2700 20.6200 760,000
21.9600 22.4000 20.2100 20.6100 693,400
Weekend
Weekend
21.2500 22.3300 20.7700 21.9600 1,093,500
20.0300 22.5320 19.9500 21.7900 2,168,600
18.1000 19.8600 17.9250 19.5200 1,367,600
17.4300 18.7350 16.9500 17.9600 827,500
17.1300 17.8050 16.9100 17.4400 773,800
Weekend
Weekend
16.2000 17.0300 15.9600 17.0000 659,200

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.

24 8-K 8-K (opens SEC filing in a new tab) After market open · 12:11 ET Summarise
23 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:34 ET Summarise
22 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 08:06 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:03 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:52 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:04 ET Summarise
16 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After market open · 10:33 ET Summarise
14 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 09:03 ET Summarise
13 DEFA14A DEFA14A (opens SEC filing in a new tab) Pre-market · 08:05 ET Summarise
12 DEF 14A DEF 14A (opens SEC filing in a new tab) Pre-market · 08:04 ET Summarise
11 S-3ASR S-3ASR (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) Pre-market · 08:05 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:02 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:03 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:54 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:27 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:04 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:02 ET Summarise
3 S-3 S-3 (opens SEC filing in a new tab) Pre-market · 08:37 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 08:08 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:06 ET Summarise