Ambiq Micro, Inc AMBQ

Open calendar →

Ambiq Micro, Inc. Common Stock · Company · NYSE

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

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

USD 38.53 → 77.55 · 101.3%
90.48056.62022.760 1 2,3 4,5 6 7,8 9 10,11 12 13 14,15 16,17 18,19 20 21 22 23 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)

Daily NYSE 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
75.6700 79.2250 76.7200 77.5500 193,277
76.8600 78.3100 75.3000 78.1400 273,800
74.7200 75.3700 71.6050 73.3700 268,200
Weekend
Weekend
70.5800 74.1200 66.2500 72.4300 634,300
79.9200 80.6750 72.6800 74.4600 515,400
87.2700 88.7190 78.9200 82.2200 568,700
85.0000 87.1160 82.1600 85.4800 401,600
82.8900 84.5300 80.3350 81.3500 328,900
Weekend
Weekend
83.8600 85.5100 82.0000 85.2800 439,600
84.7400 87.6000 84.0000 85.5900 339,400
76.0400 82.8760 76.0000 81.9300 759,000
80.4500 81.0000 74.2000 75.4800 525,700
84.6200 88.7880 82.6200 83.8200 355,200
Weekend
Weekend
No trading
87.8000 90.4000 79.3400 82.8500 638,800
85.4600 90.3900 84.0000 88.4000 761,000
86.0400 90.9210 85.7650 88.3000 801,200
80.0500 85.3600 77.0800 85.0500 498,000
Weekend
Weekend
80.4500 82.7000 78.7300 80.1500 1,347,900
84.4000 86.0000 79.4250 83.4300 947,000
23 · 424B4 Next filing day · accepted 24 Jun, 18:36 ET 424B4 ↗
80.8800 83.6200 78.5000 81.1800 2,139,800
22 · S-1MEF After-hours · 20:52 ET S-1MEF ↗
82.0500 86.8500 79.1350 79.7800 686,100
88.1000 91.0900 84.7800 88.5600 662,400
21 · S-1 Pre-market · 07:35 ET S-1 ↗
Weekend
Weekend
No trading
84.4200 91.6100 81.0600 90.4800 2,220,500
84.1900 84.5000 78.8600 79.1200 474,800
85.9700 85.9700 81.5750 82.0500 546,000
87.7500 88.6300 84.1100 85.4900 645,100
Weekend
Weekend
83.2500 89.3300 81.1700 84.7200 533,500
77.3600 83.9500 74.5000 83.3900 501,300
74.9000 81.0000 73.8700 75.1200 527,900
80.0000 82.8200 72.9700 76.0400 778,600
20 · 8-K After market open · 14:18 ET 8-K ↗
75.9500 80.8100 75.7600 79.1500 386,500
Weekend
Weekend
82.6200 84.0000 74.3570 74.4900 572,100
79.4900 85.3900 78.9000 85.0000 682,400
82.7600 85.7660 78.8100 82.8000 590,000
78.5600 84.0200 78.5600 82.8100 583,400
78.7650 80.2480 74.8000 77.4000 677,700
Weekend
Weekend
82.7000 83.8000 79.3800 79.6600 530,900
80.1900 84.1900 78.0000 82.9700 530,200
82.6400 84.2100 78.0000 80.5700 916,200
83.8900 85.7200 81.0100 83.5500 918,500
No trading
Weekend
Weekend
78.0000 81.8500 75.4400 81.6700 766,300
76.1200 79.4700 73.3800 76.5600 769,300
72.6400 77.5600 70.5300 76.6100 1,113,300
69.6400 73.5000 65.4100 71.1400 1,133,000
70.7900 73.0000 67.3000 71.3400 1,023,700
Weekend
Weekend
69.6900 73.7200 66.5000 70.5700 918,400
71.0700 73.3200 67.2800 73.3000 1,095,200
68.2500 72.4770 62.8100 71.2900 1,676,300
19 · 10-Q After-hours · 16:02 ET 10-Q ↗
53.1400 66.5900 53.1400 66.3700 3,013,100
18 · 8-K Pre-market · 07:31 ET 8-K ↗
44.1900 46.8900 44.1400 45.6700 939,300
Weekend
Weekend
38.8200 44.1800 38.4000 44.1800 937,900
41.1000 41.1000 37.4300 38.0000 534,100
40.8250 41.5000 39.2000 41.3500 363,500
40.0000 40.9900 39.5700 40.4900 271,900
41.0000 41.8000 39.2400 39.3600 410,200
Weekend
Weekend
37.6800 40.4700 37.0100 40.3900 734,400
35.0000 38.0000 34.4100 37.4800 427,900
34.8200 34.8200 33.9900 34.7500 208,100
33.5900 34.8300 32.0520 34.8200 183,000
35.3600 35.4750 33.7000 34.8200 243,500
Weekend
Weekend
35.7700 35.9500 34.8500 35.4800 291,600
35.4700 35.7500 34.4200 35.0800 347,500
17 · DEFA14A After-hours · 16:07 ET DEFA14A ↗ 16 · DEF 14A After-hours · 16:05 ET DEF 14A ↗
35.0000 35.9150 34.5000 35.4400 230,400
35.3000 36.0000 34.8000 35.3000 242,400
34.4000 35.7000 33.9400 35.1200 246,100
Weekend
Weekend
32.9000 35.0250 32.4800 34.7600 764,800
31.8000 32.2800 30.6750 32.2800 367,200
30.0000 31.6000 29.7600 31.6000 325,700
29.9200 30.2000 29.4100 30.0000 235,200
28.6600 29.7900 28.3600 29.5400 227,100
Weekend
Weekend
29.1900 29.1900 28.2800 28.8200 172,200
29.2500 29.3200 28.5750 28.8200 218,200
29.1000 29.1000 27.8900 29.1000 478,800
28.0400 28.2000 26.5400 27.7500 286,700
28.6300 28.6800 27.6200 28.2800 163,200
Weekend
Weekend
No trading
25.8300 29.0500 25.6800 28.5300 340,000
25.8800 26.9800 25.4200 26.9300 429,500
24.2000 25.4100 23.8350 25.4100 334,700
24.0800 24.0800 22.7500 23.6800 327,100
Weekend
Weekend
24.1700 24.5000 23.7700 23.7700 332,900
24.8300 25.6000 24.5000 24.6000 219,400
25.6300 26.6000 24.9700 25.2100 206,600
24.8400 25.8000 24.7600 25.3900 316,600
25.3100 26.3300 24.8930 25.3600 349,800
Weekend
Weekend
26.0000 26.4600 23.7900 24.2400 2,164,300
25.0000 26.4400 25.0000 25.9100 264,500
26.1100 26.7690 25.5200 25.5300 286,100
26.4000 27.4900 25.9500 25.9800 263,200
26.2500 27.4160 26.0000 26.2500 283,700
Weekend
Weekend
27.3200 28.0900 25.3300 25.3600 661,400
30.6600 30.7100 26.9100 26.9200 530,400
30.1300 31.4400 30.1300 31.3500 371,300
29.5600 31.2550 29.2100 30.6300 275,700
28.0000 29.1000 27.4100 29.0400 283,500
Weekend
Weekend
29.5000 30.0700 28.3000 28.3900 560,800
15 · 10-K After-hours · 16:17 ET 10-K ↗
29.8900 32.2400 28.6300 30.0600 1,012,100
14 · 8-K Pre-market · 08:33 ET 8-K ↗
29.4400 29.5000 28.0000 28.0700 339,200
29.8600 29.9350 28.5000 29.3000 352,700
30.3400 31.8600 30.2300 30.7600 255,200
Weekend
Weekend
31.9800 32.3000 30.3500 30.7000 155,000
32.8100 33.0000 31.3900 32.3600 181,700
31.8000 33.3400 31.6500 32.6100 408,400
30.2100 31.9900 30.1200 31.5400 508,400
29.4400 30.1300 29.0500 30.0700 287,100
Weekend
Weekend
29.8900 30.5000 29.4300 29.7400 169,700
29.0300 30.3000 29.0300 30.1800 206,200
29.6100 30.4150 29.4600 29.6500 195,500
29.1400 30.0950 28.5100 29.6300 200,200
No trading
Weekend
Weekend
29.3500 30.8000 29.1070 29.5900 192,900
29.3200 29.8250 28.3000 29.3200 262,400
30.0000 30.2900 28.9000 29.3200 158,000
29.7200 30.7500 29.3400 29.3700 240,600
29.5700 31.0000 29.0000 29.6900 278,800
Weekend
Weekend
29.0000 30.5500 28.5900 29.9400 196,700
29.2500 29.6000 28.1400 28.7200 299,300
29.9200 30.2900 28.9000 29.5000 291,900
30.8500 31.1250 29.2550 30.3200 357,800
29.6500 31.6200 29.6500 30.8400 305,500
Weekend
Weekend
32.2500 32.2500 29.6500 30.3900 616,600
32.2500 33.1300 31.1700 32.9900 420,700
31.7900 33.0700 31.7450 32.6700 502,100
31.7000 32.2400 30.3500 31.3700 506,500
33.4300 33.4900 30.9600 31.7200 519,000
13 · 424B4 Next filing day · accepted 23 Jan, 21:46 ET 424B4 ↗
Weekend
Weekend
33.8800 35.1720 32.7500 33.2600 1,536,900
12 · S-1MEF Pre-market · 06:02 ET S-1MEF ↗
33.7900 36.8800 32.2600 32.7000 319,700
32.0000 33.9700 31.7600 33.0300 197,000
11 · 8-K Pre-market · 08:12 ET 8-K ↗ 10 · S-1 Pre-market · 07:50 ET S-1 ↗
33.5600 34.6400 32.9500 33.0200 133,600
No trading
Weekend
Weekend
35.2000 36.4990 34.6100 34.6400 126,400
35.7500 37.4100 34.8000 34.8900 140,600
33.0000 35.9800 32.5900 35.2200 138,200
35.5700 35.5700 32.0000 32.8800 205,200
33.0000 35.7800 32.7100 35.1900 114,800
Weekend
Weekend
32.5000 33.7400 31.5000 33.3400 108,300
9 · 8-K After-hours · 16:05 ET 8-K ↗
32.0000 32.4900 31.0700 32.4000 59,200
32.1600 32.4100 31.5500 32.2900 68,800
30.4000 32.4800 30.1600 32.3500 58,600
30.4800 32.1700 30.4800 30.6700 110,200
Weekend
Weekend
28.4000 30.4800 28.4000 30.3500 169,300
No trading
29.1100 29.9800 28.4000 28.5000 128,100
29.5100 29.9700 29.0000 29.3200 93,000
29.5800 30.2400 28.8600 29.1600 92,000
Weekend
Weekend
31.2900 31.2940 29.0950 30.0000 94,300
No trading
30.1200 31.8500 30.1200 30.8300 45,900
30.7600 31.0900 30.2100 30.4100 54,900
30.5100 32.9900 30.0640 30.9200 108,000
Weekend
Weekend
29.1800 30.6400 27.9900 30.3700 148,200
27.6000 29.5000 27.2220 28.8500 126,900
27.9800 28.3250 26.4350 27.2100 118,100
27.1000 28.4900 27.1000 27.6600 51,200
29.2000 29.8980 27.1000 27.3800 87,900
Weekend
Weekend
30.0000 30.0000 28.9500 29.1200 57,700
30.1700 30.6500 29.3260 30.1600 54,500
29.3300 30.4100 29.1700 30.2000 75,500
29.1200 30.7600 28.6500 29.4700 82,500
29.3800 29.6900 28.1500 29.3100 58,000
Weekend
Weekend
27.9200 29.2900 27.9200 29.0000 78,700
27.8300 29.6600 27.2350 27.9900 149,000
25.2800 28.0000 25.2400 27.5300 92,400
24.2900 25.4900 24.2900 24.8600 68,300
24.0000 24.4300 23.8170 23.9300 74,400
Weekend
Weekend
24.4000 24.7300 24.0100 24.5100 42,200
No trading
23.5000 24.3550 23.3450 24.0800 76,400
23.8700 23.8700 22.8100 23.4400 62,500
23.2200 23.9350 23.1300 23.7500 60,200
Weekend
Weekend
22.7000 24.0400 22.1200 23.4200 120,200
24.1700 24.6600 22.7200 22.7600 90,500
22.9900 23.8260 22.8100 23.5400 98,500
23.4200 24.0300 22.9650 23.0600 94,200
24.7000 25.3700 23.8950 24.2600 92,800
Weekend
Weekend
25.5000 25.8800 24.4000 24.6600 75,000
27.9500 28.1500 25.8200 25.8700 131,500
28.7300 29.0750 27.6400 28.0500 61,800
29.0000 29.5300 28.1300 28.7100 53,800
27.4300 28.9900 27.2800 28.7500 70,900
Weekend
Weekend
28.6700 28.6700 24.0000 27.2700 327,500
8 · 10-Q After-hours · 16:26 ET 10-Q ↗ 7 · 8-K After-hours · 16:19 ET 8-K ↗
28.5200 29.5350 27.5050 29.2100 164,900
27.5000 28.6300 27.1700 28.4100 75,900
29.0000 29.0500 27.1400 27.5400 122,100
30.7800 30.7800 29.0100 29.2900 71,800
Weekend
Weekend
30.1500 30.8600 29.8750 30.5600 81,800
30.1800 30.6550 29.5300 29.7200 70,800
29.9400 31.0000 29.6700 30.4100 86,000
29.8900 30.2920 29.5100 29.6200 76,100
31.4400 31.5800 29.9900 30.4500 67,600
Weekend
Weekend
30.6800 31.2200 30.5090 31.0900 61,800
29.7200 30.4130 29.6600 30.3600 55,500
31.7400 31.7400 29.4000 29.6300 185,200
32.2500 32.2500 31.2500 31.9100 47,500
30.7900 32.5400 30.7400 31.7800 69,400
Weekend
Weekend
29.4200 30.6400 29.2900 30.3600 122,400
32.0100 32.0100 29.2400 29.4200 100,100
32.4800 33.2750 31.5700 31.5700 97,200
31.8400 32.4300 30.4500 32.0400 70,100
31.6400 32.2450 31.4000 32.0800 70,000
Weekend
Weekend
32.1900 32.8700 30.7700 30.7700 125,500
34.0000 34.0800 31.7450 32.2900 95,200
32.5600 34.8230 32.3600 33.8300 176,700
31.5000 32.6600 31.5000 32.1000 178,300
30.4000 31.9200 30.0000 31.2200 142,100
Weekend
Weekend
6 · 8-K After-hours · 16:05 ET 8-K ↗
29.6600 30.3800 29.3300 29.8300 174,800
29.8500 30.1500 28.6100 29.6800 423,700
29.8500 30.2000 28.9200 29.8700 290,800
29.9000 30.4000 28.8300 29.9200 352,100
30.1900 30.8700 30.1900 30.4000 146,600
Weekend
Weekend
30.4000 31.0000 29.2100 30.0800 261,900
31.0600 31.3800 30.2500 30.3800 149,300
32.5900 32.8100 31.3000 31.4000 75,500
32.3500 32.7450 31.7050 32.2000 142,700
31.0200 32.7380 31.0200 32.0600 235,100
Weekend
Weekend
33.1000 33.6800 31.2100 31.2100 1,108,700
33.6900 35.0000 32.8650 33.0200 289,100
34.0200 34.5950 32.6400 32.9700 165,400
34.8300 35.1550 33.8950 34.6800 111,700
34.4200 35.2330 33.2500 34.6900 140,500
Weekend
Weekend
36.1000 36.8100 33.7100 34.4500 195,000
34.4400 36.9650 34.4400 36.5700 138,100
36.0000 37.4900 34.7600 35.0400 143,000
33.8400 36.6000 33.6050 36.5900 221,800
34.4500 35.1690 31.6000 33.2400 417,600
Weekend
Weekend
36.5600 36.7100 34.2850 34.4400 651,900
5 · 10-Q After-hours · 16:08 ET 10-Q ↗ 4 · 8-K After-hours · 16:06 ET 8-K ↗
38.4000 40.7500 36.5980 40.5900 236,200
37.0500 39.0550 37.0500 38.4000 131,600
40.1900 40.1900 36.5000 37.0100 164,100
No trading
Weekend
Weekend
38.8900 40.3800 38.8900 39.7100 109,500
40.0000 40.6200 38.3080 39.1100 127,400
40.8500 40.8500 38.3100 39.8300 107,400
38.4900 40.9800 38.2700 40.9400 154,000
38.2500 39.3300 36.8800 38.4900 163,900
Weekend
Weekend
37.1200 39.3600 35.5000 38.4700 211,100
35.6500 39.1100 35.6500 37.0100 336,200
35.2000 36.5800 34.5000 35.7100 339,700
38.6800 39.0240 35.2500 36.0400 244,900
39.3200 40.8200 38.2200 38.5600 186,900
Weekend
Weekend
38.0500 39.1000 37.0000 37.9800 145,200
37.5700 39.5000 36.6000 37.7900 326,800
41.3000 41.7400 37.5000 38.3400 302,700
37.9500 41.7700 37.4040 41.3000 369,300
38.9900 40.6600 36.1600 36.3900 286,000
Weekend
Weekend
40.8200 42.0900 37.2100 39.4700 253,600
42.3100 42.9000 39.3840 40.8000 347,300
35.0000 43.1700 32.8900 43.1700 563,300
38.1700 38.8600 35.0200 35.5600 379,200
39.8700 40.5600 35.0000 38.1600 662,000
Weekend
Weekend
41.5000 42.3000 37.3000 39.5100 970,900
3 · 8-K After-hours · 16:01 ET 8-K ↗
42.2300 51.7620 41.1750 43.8500 4,133,600
2 · 424B4 Next filing day · accepted 30 Jul, 18:06 ET 424B4 ↗
38.0000 48.4300 36.2500 38.5300 5,479,500
1 · S-1MEF After-hours · 17:27 ET S-1MEF ↗
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading

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.

23 424B4 424B4 (opens SEC filing in a new tab) Next filing day · accepted 24 Jun, 18:36 ET Summarise
22 S-1MEF S-1MEF (opens SEC filing in a new tab) After-hours · 20:52 ET Summarise
21 S-1 S-1 (opens SEC filing in a new tab) Pre-market · 07:35 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) After market open · 14:18 ET Summarise
19 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:31 ET Summarise
17 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
16 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
15 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:33 ET Summarise
13 424B4 424B4 (opens SEC filing in a new tab) Next filing day · accepted 23 Jan, 21:46 ET Summarise
12 S-1MEF S-1MEF (opens SEC filing in a new tab) Pre-market · 06:02 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:12 ET Summarise
10 S-1 S-1 (opens SEC filing in a new tab) Pre-market · 07:50 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
8 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:26 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
5 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
2 424B4 424B4 (opens SEC filing in a new tab) Next filing day · accepted 30 Jul, 18:06 ET Summarise
1 S-1MEF S-1MEF (opens SEC filing in a new tab) After-hours · 17:27 ET Summarise