ESS Tech, Inc GWH

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ESS Tech, Inc. Common Stock · Company · NYSE · Industrials / Electrical Equipment & Parts

Paper trade (simulated — no real money)

Fill: USD 0.3422 · FX 1 USD = 1.266600 SGD · about SGD 0.4334 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 1.37 → 0.34 · -75.0%
9.0504.6880.325 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 28,29 30,31 32,33,34 35,36 37 38 39 40 41 42,43 44 45,46 47,48 49 Sep 25Dec 25Mar 26Jun 26Sep 26

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

Price & SEC Filing History 05 Sep 2025 — 06 Sep 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.

Weekend
Weekend
0.3400 0.3443 0.3230 0.3422 627,995
49 · 8-K After-hours · 16:36 ET 8-K ↗
0.3330 0.3500 0.3200 0.3370 989,100
0.3590 0.3600 0.3070 0.3250 1,616,500
0.3500 0.3620 0.3310 0.3400 677,400
0.3670 0.3830 0.3500 0.3500 1,487,500
Weekend
Weekend
0.3570 0.3670 0.3400 0.3500 556,200
0.3800 0.4020 0.3480 0.3590 1,441,700
0.3770 0.3900 0.3660 0.3770 790,100
0.3900 0.4050 0.3700 0.3780 797,800
0.4040 0.4100 0.3700 0.3890 1,202,700
Weekend
Weekend
48 · 8-K After-hours · 16:09 ET 8-K ↗
0.4000 0.4350 0.3800 0.4050 2,971,400
47 · 424B5 Next filing day · accepted 20 Aug, 21:50 ET 424B5 ↗
0.6750 0.6810 0.3400 0.3920 4,970,500
0.6510 0.7170 0.6500 0.6860 400,200
0.6590 0.6630 0.6000 0.6630 569,800
0.6100 0.6600 0.5800 0.6090 684,800
Weekend
Weekend
0.5940 0.6200 0.5680 0.6190 424,700
0.5700 0.6180 0.5650 0.5940 659,800
0.6200 0.6200 0.5600 0.5710 1,186,500
46 · 10-Q After-hours · 16:21 ET 10-Q ↗ 45 · 8-K After-hours · 16:10 ET 8-K ↗
0.6110 0.6480 0.6000 0.6480 1,156,900
0.6500 0.6600 0.5720 0.5820 1,172,000
Weekend
Weekend
0.6700 0.6980 0.6100 0.6440 892,200
0.7300 0.7300 0.6550 0.6750 1,497,700
44 · 8-K Pre-market · 08:36 ET 8-K ↗
0.7500 0.7670 0.7250 0.7290 206,900
0.7400 0.7500 0.7260 0.7260 234,200
0.7700 0.7700 0.7160 0.7190 303,100
Weekend
Weekend
0.7870 0.7870 0.7470 0.7470 202,200
0.7140 0.7960 0.7140 0.7590 596,900
0.7500 0.7500 0.7100 0.7150 299,300
0.7900 0.7900 0.7150 0.7500 454,100
0.7770 0.7920 0.7510 0.7690 358,900
Weekend
Weekend
0.8170 0.8170 0.7500 0.7510 572,300
0.8510 0.9080 0.8000 0.8000 914,900
0.8850 0.9980 0.8220 0.8880 3,096,900
0.8400 0.8680 0.8330 0.8430 226,300
0.9000 0.9000 0.8360 0.8360 298,700
Weekend
Weekend
0.9090 0.9100 0.8630 0.8850 274,400
43 · 8-K Next filing day · accepted 16 Jul, 18:14 ET 8-K ↗ 42 · 424B5 Next filing day · accepted 16 Jul, 18:13 ET 424B5 ↗
1.0100 1.0100 0.8700 0.8900 708,800
0.9480 1.0610 0.9100 1.0200 2,111,000
0.8060 0.8990 0.8050 0.8700 412,700
0.8700 0.8700 0.8030 0.8060 264,100
Weekend
Weekend
0.8320 0.8590 0.8000 0.8500 309,700
0.8470 0.8630 0.8100 0.8240 272,700
0.7900 0.8170 0.7700 0.8100 400,200
0.8800 0.8800 0.7100 0.7600 997,600
0.8700 0.9200 0.8520 0.8800 433,300
Weekend
Weekend
No trading
0.9500 0.9500 0.8520 0.8630 498,900
41 · 8-K After-hours · 16:15 ET 8-K ↗
0.9900 1.0300 0.8930 0.9110 816,500
1.0200 1.0200 0.9070 0.9500 1,010,900
0.8800 1.1000 0.8700 0.9860 3,910,900
Weekend
Weekend
0.7570 0.8690 0.7300 0.8500 813,800
0.8500 0.8690 0.7600 0.7640 369,800
0.8010 0.8460 0.7380 0.8460 625,400
0.8070 0.8960 0.7400 0.7780 2,645,400
40 · 8-K Pre-market · 08:36 ET 8-K ↗
0.8080 0.8080 0.7360 0.7400 408,000
Weekend
Weekend
No trading
39 · 8-K After-hours · 17:27 ET 8-K ↗
0.7900 0.7990 0.7700 0.7920 355,300
0.7900 0.8500 0.7820 0.7900 207,400
0.8020 0.8400 0.7800 0.8010 377,400
0.8500 0.8670 0.7210 0.8000 725,500
38 · 8-K Pre-market · 08:59 ET 8-K ↗
Weekend
Weekend
0.8600 0.8860 0.8120 0.8270 290,300
0.8650 0.8730 0.8110 0.8730 379,800
0.8200 0.8800 0.7800 0.8410 599,500
0.9100 0.9110 0.8100 0.8410 462,900
0.9070 0.9070 0.8300 0.8570 476,400
Weekend
Weekend
1.0100 1.0100 0.8980 0.9070 1,036,800
0.9900 1.0800 0.9200 1.0100 683,700
1.0000 1.0200 0.8900 0.9200 645,500
1.0100 1.0200 0.9800 0.9800 379,800
1.0400 1.0700 1.0150 1.0200 553,000
Weekend
Weekend
37 · 8-K After-hours · 17:18 ET 8-K ↗
1.0300 1.0400 0.9510 1.0100 412,800
0.9400 1.0300 0.9400 1.0000 397,700
1.0300 1.0500 0.9170 0.9840 723,800
1.0500 1.1100 1.0100 1.0100 1,902,500
No trading
Weekend
Weekend
0.9300 0.9700 0.9100 0.9580 306,000
0.9710 0.9790 0.9010 0.9220 357,500
0.8670 0.9100 0.8540 0.9010 243,800
0.8890 0.8900 0.8400 0.8600 293,600
0.9400 0.9400 0.8300 0.8600 539,200
Weekend
Weekend
0.9280 0.9430 0.8910 0.9100 286,500
0.9700 0.9700 0.8660 0.9410 708,000
0.8000 1.0900 0.7360 0.9790 3,262,700
0.8640 0.8640 0.7690 0.7730 697,400
0.8200 0.9000 0.7910 0.8140 1,572,400
Weekend
Weekend
1.0500 1.0500 0.5650 0.7800 7,836,800
36 · 10-Q After-hours · 16:31 ET 10-Q ↗ 35 · 8-K After-hours · 16:26 ET 8-K ↗
1.1300 1.1700 1.0800 1.1200 926,500
1.1500 1.1700 1.1000 1.1400 732,400
1.1100 1.1900 1.1100 1.1500 609,400
1.1200 1.1280 1.0800 1.1100 411,800
Weekend
Weekend
1.1300 1.1400 1.0900 1.1000 439,600
1.0800 1.1300 1.0100 1.1000 823,300
1.1600 1.1600 1.0700 1.0700 715,100
1.1600 1.1800 1.1300 1.1700 596,600
1.1400 1.1900 1.1300 1.1900 265,600
Weekend
Weekend
1.1300 1.1500 1.1000 1.1400 365,500
1.1600 1.1600 1.1000 1.1400 333,100
1.1600 1.1600 1.1200 1.1400 282,500
1.2000 1.2100 1.1000 1.1200 734,900
1.1600 1.1900 1.1200 1.1800 529,600
Weekend
Weekend
1.1600 1.1800 1.1200 1.1600 497,700
1.1800 1.1960 1.1250 1.1400 475,200
34 · DEFA14A After-hours · 16:07 ET DEFA14A ↗ 33 · DEF 14A After-hours · 16:06 ET DEF 14A ↗ 32 · 8-K After-hours · 16:05 ET 8-K ↗
1.2200 1.2300 1.1500 1.1700 995,900
1.2300 1.2400 1.1700 1.2000 408,100
1.1300 1.2100 1.1000 1.2100 252,200
Weekend
Weekend
1.1500 1.1600 1.1200 1.1500 124,800
1.1400 1.1500 1.0900 1.1500 249,600
1.1900 1.1900 1.0800 1.1000 289,800
1.1600 1.1800 1.0900 1.0900 488,500
1.1900 1.2100 1.1550 1.2000 220,000
Weekend
Weekend
No trading
1.1200 1.2100 1.1200 1.2100 180,900
1.1800 1.2000 1.1450 1.1800 275,000
1.1200 1.2000 1.1100 1.1700 281,400
1.1500 1.1700 1.0900 1.1100 248,600
Weekend
Weekend
1.2000 1.2000 1.0950 1.1300 353,500
1.2100 1.2400 1.1700 1.2000 223,200
1.2000 1.2500 1.2000 1.2500 217,200
1.1800 1.2070 1.1500 1.1700 218,300
1.2300 1.2690 1.1800 1.1800 296,800
Weekend
Weekend
1.2500 1.2600 1.1650 1.2300 645,300
1.3100 1.3100 1.2300 1.2600 308,300
1.3600 1.3600 1.2800 1.2800 225,600
1.3200 1.3600 1.3120 1.3600 264,700
1.2800 1.3200 1.2600 1.3000 197,400
Weekend
Weekend
1.2900 1.2980 1.2500 1.2700 164,200
1.2900 1.2990 1.2400 1.2700 232,800
1.3200 1.3400 1.2700 1.3100 304,700
1.3300 1.3550 1.2700 1.3000 451,600
1.2900 1.3100 1.2300 1.3000 412,100
Weekend
Weekend
1.3100 1.3400 1.2200 1.3000 549,300
31 · 10-K After-hours · 16:10 ET 10-K ↗ 30 · 8-K After-hours · 16:06 ET 8-K ↗
1.4400 1.4490 1.3200 1.3600 967,700
1.4700 1.5000 1.4300 1.4400 621,700
1.5100 1.5900 1.4100 1.5100 6,555,700
1.5000 1.6100 1.4900 1.6100 323,000
Weekend
Weekend
1.6500 1.6550 1.5250 1.5900 445,000
1.6100 1.7100 1.5400 1.6600 717,400
1.5000 1.6200 1.4710 1.5900 480,800
1.4400 1.5200 1.4000 1.4700 269,100
1.5000 1.5400 1.3900 1.4600 392,800
Weekend
Weekend
1.5300 1.6000 1.5000 1.5400 203,600
1.4800 1.6150 1.4500 1.5600 495,200
1.4400 1.5200 1.4000 1.5000 357,300
1.4300 1.4700 1.3800 1.4200 180,200
No trading
Weekend
Weekend
1.4500 1.4700 1.3800 1.4400 171,700
1.5100 1.5400 1.4200 1.4200 216,900
1.5200 1.5500 1.4500 1.5300 248,800
1.5800 1.6200 1.5100 1.5100 230,400
1.5900 1.6500 1.5100 1.5800 500,000
Weekend
Weekend
1.4600 1.6150 1.4200 1.5900 397,000
1.5600 1.5800 1.4000 1.4000 483,000
1.7500 1.7900 1.5600 1.6100 644,800
1.6600 1.7600 1.6200 1.7500 449,200
1.7500 1.7500 1.5500 1.6400 400,000
Weekend
Weekend
1.6900 1.8300 1.6500 1.7500 810,100
29 · 8-K Next filing day · accepted 29 Jan, 21:49 ET 8-K ↗ 28 · 424B5 Next filing day · accepted 29 Jan, 21:47 ET 424B5 ↗
1.5700 1.7350 1.5000 1.7100 3,152,800
27 · 8-K Pre-market · 08:15 ET 8-K ↗
1.7200 1.7200 1.6500 1.6800 217,000
1.7500 1.7550 1.6200 1.6900 460,800
1.7800 1.8400 1.6700 1.7500 590,700
Weekend
Weekend
1.9400 1.9400 1.7800 1.7800 428,000
1.8550 1.9570 1.8250 1.9100 493,500
1.7800 1.8500 1.7100 1.8100 366,500
1.8000 1.8200 1.7150 1.7800 385,400
No trading
Weekend
Weekend
1.8300 1.9350 1.7600 1.8400 613,100
1.8000 1.8200 1.7700 1.7800 320,100
1.8100 1.8190 1.7250 1.7800 301,600
1.9100 1.9300 1.7600 1.8100 645,700
1.9300 1.9300 1.8000 1.8400 667,700
Weekend
Weekend
1.9500 2.0000 1.8300 1.9100 878,300
1.8600 1.9700 1.8500 1.8800 424,800
1.9300 1.9400 1.8000 1.8100 296,400
1.9700 2.0200 1.8710 1.9300 302,100
26 · 8-K Pre-market · 08:43 ET 8-K ↗
2.0800 2.1500 1.9000 1.9500 533,800
Weekend
Weekend
2.0500 2.1100 1.9750 2.0100 620,900
No trading
1.8100 1.9250 1.8080 1.8800 345,200
1.7700 1.8800 1.7450 1.8300 351,700
1.8000 1.8750 1.7300 1.7800 347,200
Weekend
Weekend
1.9400 1.9600 1.8100 1.8600 447,300
No trading
2.0300 2.0300 1.9200 1.9400 120,100
1.9700 2.0300 1.9150 2.0300 301,400
2.0500 2.3000 2.0000 2.0000 853,900
Weekend
Weekend
1.8700 2.0000 1.8700 1.9900 375,200
2.1600 2.1700 1.8500 1.8500 437,800
2.0400 2.1800 2.0050 2.0600 496,600
1.9100 2.0400 1.9000 1.9600 349,000
2.1200 2.1420 1.9300 1.9300 435,300
Weekend
Weekend
2.2200 2.2500 2.0900 2.0900 291,800
25 · 424B3 After-hours · 17:22 ET 424B3 ↗ 24 · 424B5 After-hours · 17:21 ET 424B5 ↗
2.2700 2.3170 2.1740 2.2900 334,700
2.2800 2.3550 2.2000 2.3100 410,800
2.2400 2.3700 2.2100 2.2800 419,600
2.2000 2.2850 2.1400 2.2300 275,700
Weekend
Weekend
23 · 8-K After-hours · 16:18 ET 8-K ↗
2.4100 2.4100 2.1300 2.1600 521,900
2.2200 2.4450 2.2200 2.3800 799,200
2.3700 2.3800 2.2300 2.2700 563,600
2.4500 2.4600 2.3300 2.3300 320,000
2.7400 2.7700 2.4100 2.4100 430,000
Weekend
Weekend
2.7000 2.8300 2.6850 2.7500 525,100
No trading
2.6100 2.6530 2.5050 2.6500 395,100
2.5200 2.6600 2.3800 2.5800 669,500
2.4900 2.5700 2.4000 2.4800 485,800
Weekend
Weekend
2.3500 2.4600 2.2400 2.4400 653,000
2.6200 2.7690 2.3790 2.4000 611,700
2.5800 2.6100 2.4600 2.5200 453,600
2.4800 2.6700 2.4000 2.5500 450,600
2.6700 2.8400 2.4600 2.5700 777,300
Weekend
Weekend
3.1700 3.4100 2.6350 2.7600 1,901,100
22 · 8-K After-hours · 16:31 ET 8-K ↗ 21 · 10-Q After-hours · 16:08 ET 10-Q ↗ 20 · S-3 After-hours · 16:20 ET S-3 ↗ 19 · 8-K After-hours · 16:14 ET 8-K ↗ 18 · 424B5 After-hours · 16:12 ET 424B5 ↗
4.4100 4.6700 4.1900 4.2500 1,131,200
4.3000 4.4960 4.1700 4.4000 480,800
4.2800 4.4100 4.0550 4.2500 362,400
4.6400 4.7500 4.1900 4.2900 539,400
Weekend
Weekend
4.1100 4.5100 3.8000 4.4400 669,200
4.4900 4.4900 4.0800 4.1800 480,600
3.6400 4.6400 3.6400 4.5600 1,388,200
3.5900 3.8200 3.5000 3.6200 483,700
4.0200 4.2570 3.7800 3.7800 584,700
Weekend
Weekend
4.2100 4.2920 3.8400 4.1300 648,000
4.4400 4.4400 4.0000 4.0000 595,500
4.6100 4.6580 4.3320 4.3500 920,900
5.1100 5.2900 4.5280 4.7000 1,475,000
4.7100 5.6700 4.6600 4.9000 3,330,500
Weekend
Weekend
4.7100 4.9000 4.4800 4.5100 1,371,100
4.6300 5.1900 4.6300 4.8400 1,261,500
17 · 424B2 After-hours · 16:14 ET 424B2 ↗
4.1400 4.8400 4.0400 4.7400 2,608,300
4.8000 4.8000 4.1400 4.3300 2,570,200
5.0500 5.4700 4.7500 4.7800 3,199,300
Weekend
Weekend
4.8700 6.6800 4.6500 5.2800 30,573,500
16 · 424B2 Next filing day · accepted 16 Oct, 19:28 ET 424B2 ↗
5.3900 5.6700 4.5250 4.5500 6,035,000
15 · 424B2 After-hours · 17:20 ET 424B2 ↗
6.3200 6.9000 6.0000 6.1200 7,798,800
10.6500 10.7700 6.5800 7.5800 30,853,000
14 · 8-K Pre-market · 09:00 ET 8-K ↗ 13 · 424B2 Pre-market · 08:16 ET 424B2 ↗ 12 · 8-K Pre-market · 08:12 ET 8-K ↗
5.8000 13.8700 5.6300 9.0500 162,649,600
Weekend
Weekend
11 · 424B2 After-hours · 16:47 ET 424B2 ↗
3.6300 5.3300 3.0400 4.1600 280,689,200
10 · 424B2 After-hours · 16:41 ET 424B2 ↗
1.8000 1.8400 1.6500 1.7200 8,558,900
2.0000 2.0000 1.7500 1.7900 568,100
1.9600 2.1000 1.7600 1.8900 1,003,500
9 · DEFA14A Next filing day · accepted 06 Oct, 18:56 ET DEFA14A ↗ 8 · 424B2 Next filing day · accepted 06 Oct, 18:27 ET 424B2 ↗
1.8700 2.1500 1.7700 2.0100 1,566,300
Weekend
Weekend
1.5400 1.7600 1.5400 1.7200 1,000,300
1.5600 1.5700 1.4700 1.5300 292,300
1.5200 1.6000 1.4500 1.5500 224,800
7 · 424B2 After-hours · 16:51 ET 424B2 ↗
1.6800 1.6900 1.4750 1.5200 260,900
1.6300 1.7100 1.5500 1.6600 268,400
Weekend
Weekend
1.7100 1.7100 1.5400 1.6000 263,400
1.6700 1.8560 1.6400 1.7300 507,600
6 · 424B2 Next filing day · accepted 24 Sep, 18:28 ET 424B2 ↗
1.6600 1.7360 1.6200 1.6200 223,100
1.7600 1.7700 1.6500 1.6500 365,400
5 · DEF 14A After-hours · 16:11 ET DEF 14A ↗
1.6000 1.7600 1.5220 1.7000 365,700
Weekend
Weekend
4 · 424B2 After-hours · 17:07 ET 424B2 ↗
1.5200 1.5700 1.4900 1.5300 261,300
1.6000 1.6600 1.5000 1.5000 244,200
1.5000 1.7000 1.4500 1.6000 390,600
1.4000 1.7500 1.4000 1.5800 435,000
3 · 424B2 Next filing day · accepted 15 Sep, 18:47 ET 424B2 ↗
1.3700 1.4100 1.3600 1.4000 125,300
Weekend
Weekend
1.4300 1.4600 1.3700 1.4100 128,700
1.4600 1.5000 1.4100 1.4300 111,800
1.3600 1.4500 1.3600 1.4500 101,600
2 · PRE 14A After-hours · 16:05 ET PRE 14A ↗
1.3400 1.3600 1.2200 1.3600 144,100
1.3800 1.4000 1.3100 1.3400 84,300
Weekend
Weekend
1 · 424B2 After-hours · 16:41 ET 424B2 ↗
1.3200 1.3700 1.2900 1.3700 79,600

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.