Tantech Holdings Ltd. - Class A Common Shares TANH

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Tantech Holdings Ltd. - Class A Common Shares · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 0.4210 · FX 1 USD = 1.290100 SGD · about SGD 0.5431 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 2.13 → 0.42 · -80.2%
2.3601.3350.311 1 2 3 4 5 6 7 8 9 10,11 12 13,14 15 16 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
0.4330 0.4690 0.4010 0.4210 349,700
0.4650 0.4700 0.4200 0.4320 99,800
0.4490 0.4800 0.4220 0.4620 56,200
0.4390 0.5300 0.4140 0.4630 674,100
0.4340 0.4400 0.4140 0.4270 53,500
Weekend
Weekend
0.4200 0.4480 0.4100 0.4340 44,500
0.4170 0.4480 0.4060 0.4170 82,400
0.4070 0.4440 0.3900 0.4300 121,200
0.3990 0.4890 0.3810 0.4000 1,994,700
0.4400 0.4510 0.3980 0.4090 992,000
Weekend
Weekend
0.4390 0.4600 0.4150 0.4550 336,400
0.4280 0.4500 0.3910 0.4420 417,400
0.4080 0.4520 0.3890 0.4280 687,300
0.3970 0.4450 0.3870 0.4080 766,300
0.3810 0.4300 0.3520 0.4070 850,000
Weekend
Weekend
No trading
0.3800 0.4000 0.3800 0.3990 235,400
0.3600 0.4140 0.3600 0.3760 592,900
0.4200 0.4220 0.3700 0.3800 74,700
0.4100 0.4250 0.4050 0.4150 65,100
Weekend
Weekend
0.3700 0.4160 0.3650 0.4050 174,100
0.4060 0.4440 0.3640 0.3900 169,500
0.4460 0.4790 0.4250 0.4480 101,600
0.4650 0.4840 0.4110 0.4600 182,200
0.4800 0.4840 0.4410 0.4840 35,400
Weekend
Weekend
No trading
0.5990 0.5990 0.4400 0.4660 315,800
0.4300 0.6400 0.4300 0.5800 2,251,200
0.4710 0.4980 0.4060 0.4320 117,300
0.4600 0.5050 0.4600 0.4900 35,400
Weekend
Weekend
0.4800 0.4980 0.4690 0.4810 75,900
0.4970 0.5000 0.4620 0.4790 225,800
0.4790 0.5700 0.4630 0.5110 1,699,600
16 · F-3 After market open · 09:55 ET FORM F-3 ↗
0.4890 0.4990 0.4370 0.4600 428,700
0.4380 0.5200 0.4200 0.4910 1,018,700
Weekend
Weekend
0.4100 0.4450 0.4000 0.4200 108,400
0.4500 0.4590 0.4000 0.4250 63,400
0.4450 0.4600 0.4300 0.4480 17,700
0.4430 0.4700 0.4300 0.4510 54,300
0.4300 0.4600 0.4070 0.4600 49,300
Weekend
Weekend
0.4120 0.4460 0.3800 0.4270 84,900
0.4100 0.4300 0.3880 0.4090 238,800
0.4090 0.4400 0.3930 0.4120 120,100
0.4110 0.4320 0.3800 0.4070 346,000
No trading
Weekend
Weekend
0.4500 0.4500 0.4000 0.4200 389,300
0.4450 0.4900 0.4300 0.4500 216,000
0.4310 0.4480 0.4170 0.4450 329,600
0.3900 0.4600 0.3840 0.4400 508,300
0.4030 0.4360 0.3800 0.3900 136,300
Weekend
Weekend
0.4200 0.4400 0.3810 0.3920 181,300
15 · 20-F After-hours · 16:33 ET FORM 20-F ↗
0.3920 0.4420 0.3900 0.4330 395,400
0.4240 0.4240 0.3600 0.3800 260,200
0.3700 0.4400 0.3700 0.4240 599,600
0.3660 0.3720 0.3550 0.3560 150,800
Weekend
Weekend
0.3640 0.4100 0.3540 0.3550 442,800
0.3620 0.3850 0.3620 0.3620 24,100
0.3750 0.3800 0.3620 0.3630 27,800
0.3900 0.3900 0.3750 0.3760 16,500
0.3820 0.4000 0.3710 0.3720 72,000
Weekend
Weekend
0.4120 0.4210 0.3900 0.3910 49,300
0.4220 0.4220 0.3840 0.3950 44,100
0.3870 0.4300 0.3620 0.4120 276,300
0.3310 0.4490 0.3310 0.3890 752,500
0.3550 0.3680 0.3230 0.3400 53,100
Weekend
Weekend
0.3480 0.3700 0.3440 0.3440 14,400
0.3510 0.3600 0.3500 0.3500 32,500
0.3450 0.3670 0.3410 0.3580 58,500
0.3680 0.3800 0.3430 0.3450 73,900
0.3500 0.3740 0.3310 0.3690 114,000
Weekend
Weekend
0.3700 0.3700 0.3410 0.3480 228,900
0.3250 0.3740 0.3100 0.3700 322,700
0.3100 0.3330 0.3020 0.3120 588,500
0.3070 0.3500 0.3020 0.3190 499,200
0.3400 0.3540 0.3100 0.3110 360,000
Weekend
Weekend
0.3700 0.4190 0.3530 0.3700 1,105,500
0.3690 0.3690 0.3370 0.3650 50,300
0.3750 0.3800 0.3500 0.3770 145,100
0.3700 0.3790 0.3200 0.3610 405,700
0.3760 0.3820 0.3610 0.3790 321,500
Weekend
Weekend
No trading
14 · 6-K After-hours · 16:15 ET FORM 6-K ↗ 13 · 424B5 After-hours · 16:05 ET 424B5 ↗
0.3600 0.5530 0.3600 0.4100 2,194,700
0.4450 0.4720 0.3340 0.3920 1,068,800
0.7400 0.7400 0.3700 0.5890 896,700
12 · 6-K Pre-market · 08:31 ET FORM 6-K ↗
0.6900 0.7060 0.6560 0.7060 11,600
Weekend
Weekend
0.7000 0.7290 0.6530 0.7200 23,900
0.7370 0.7960 0.7030 0.7540 24,200
11 · 6-K After-hours · 16:03 ET FORM 6-K ↗
0.6230 0.7880 0.5700 0.7520 243,100
10 · 424B5 Pre-market · 09:16 ET 424B5 ↗
0.7700 0.7700 0.4300 0.6790 1,100,300
9 · 6-K After-hours · 16:03 ET FORM 6-K ↗
0.8410 0.8800 0.7260 0.7550 304,300
Weekend
Weekend
0.8750 0.8810 0.8010 0.8350 24,400
0.8920 0.8970 0.8590 0.8970 23,100
0.8900 0.9000 0.8140 0.8800 55,200
0.8720 1.0000 0.8110 0.9120 360,700
0.8110 0.9070 0.8110 0.8500 12,600
Weekend
Weekend
0.8580 0.8580 0.8100 0.8110 10,300
0.9080 0.9080 0.8260 0.8650 42,500
0.7660 1.0300 0.7360 1.0300 271,700
0.7780 0.7780 0.7340 0.7610 7,700
0.7990 0.8370 0.7340 0.7570 23,500
Weekend
Weekend
0.8000 0.8000 0.7550 0.7880 7,500
0.8300 0.8350 0.7500 0.7980 9,300
0.8000 0.8350 0.7960 0.8300 13,500
0.8100 0.8100 0.7340 0.8020 14,300
0.8100 0.8400 0.7500 0.8040 36,800
Weekend
Weekend
0.8300 0.8560 0.7890 0.8230 38,600
0.8490 0.8960 0.8200 0.8450 12,400
0.8800 0.8950 0.8300 0.8550 21,400
0.9200 0.9600 0.8550 0.8790 31,300
0.9020 0.9600 0.9000 0.9600 7,900
Weekend
Weekend
0.8700 0.9900 0.8700 0.9800 18,600
0.8700 0.9000 0.8400 0.8880 9,700
0.8320 0.9000 0.8320 0.9000 7,400
0.8220 0.9100 0.8220 0.9000 4,300
No trading
Weekend
Weekend
0.8480 0.9200 0.8000 0.9190 37,300
0.9070 0.9800 0.8100 0.8710 77,100
0.9400 0.9500 0.9000 0.9170 26,100
0.9800 1.0300 0.9100 0.9910 41,400
0.9020 1.0100 0.9020 1.0100 170,100
Weekend
Weekend
0.8090 0.9600 0.8000 0.9160 94,000
0.7810 0.8390 0.7800 0.8280 29,500
0.7990 0.8390 0.7800 0.8290 47,200
0.7970 0.8950 0.7800 0.8370 40,700
0.7400 0.9000 0.7260 0.8150 148,800
Weekend
Weekend
0.8730 0.9670 0.8000 0.8760 3,488,100
0.9500 1.0500 0.8500 1.0050 170,900
1.0100 1.0600 0.9500 0.9500 138,400
1.0020 1.0200 0.9620 1.0000 22,400
1.0000 1.0000 0.9500 0.9520 16,700
Weekend
Weekend
1.0200 1.0200 0.9900 1.0000 23,000
1.0310 1.0310 0.9800 1.0100 34,100
0.9900 1.0600 0.9840 1.0100 22,800
0.9600 1.0000 0.9600 0.9600 17,800
No trading
Weekend
Weekend
0.9790 1.0500 0.9790 0.9820 10,400
8 · 6-K After-hours · 16:05 ET FORM 6-K ↗
0.9800 1.0000 0.9540 0.9620 11,400
0.9920 1.0000 0.9750 0.9800 9,100
1.0300 1.0300 0.9920 0.9920 22,800
1.0500 1.0500 1.0000 1.0100 50,000
Weekend
Weekend
1.0400 1.0400 0.9900 1.0200 23,900
1.0200 1.0400 0.9800 1.0100 52,000
0.9900 1.0400 0.9810 1.0000 20,000
1.0100 1.0100 0.9600 0.9750 22,800
0.9900 1.0100 0.9560 1.0100 93,200
Weekend
Weekend
1.0000 1.0000 0.9320 1.0000 47,200
No trading
0.9500 1.0100 0.9000 1.0000 73,800
7 · 6-K Pre-market · 08:30 ET FORM 6-K ↗
0.9910 1.0400 0.9230 1.0000 99,900
0.9890 1.0000 0.9210 0.9370 53,500
Weekend
Weekend
0.9970 1.0350 0.9260 1.0200 84,600
No trading
1.0100 1.0600 0.9830 0.9970 11,300
1.0200 1.0860 0.9900 0.9900 58,200
1.0800 1.1300 1.0100 1.0650 118,200
Weekend
Weekend
0.9600 1.0900 0.9600 1.0800 106,100
6 · 6-K Pre-market · 08:11 ET FORM 6-K ↗
0.9980 0.9980 0.9600 0.9710 10,900
0.9370 1.0200 0.9360 1.0000 20,400
0.9560 0.9560 0.9200 0.9510 25,600
1.0000 1.0000 0.9600 0.9700 20,500
Weekend
Weekend
1.0100 1.0300 0.9590 1.0200 24,300
5 · 6-K After-hours · 17:00 ET FROM 6-K ↗
1.0450 1.0600 1.0000 1.0300 22,300
1.0650 1.0800 1.0500 1.0800 9,500
1.1220 1.1220 1.0500 1.0600 17,200
1.0900 1.1230 1.0400 1.1100 44,700
Weekend
Weekend
1.1300 1.1300 1.0200 1.1100 30,500
1.1190 1.1200 1.0900 1.1200 10,300
1.1000 1.1200 0.9830 1.1200 18,200
1.1100 1.1200 1.1100 1.1200 2,100
1.1600 1.1870 1.1000 1.1300 61,500
Weekend
Weekend
1.0700 1.2000 1.0600 1.1900 64,200
No trading
1.0200 1.0900 1.0200 1.0500 11,200
1.0500 1.0600 1.0300 1.0400 11,300
1.0200 1.0700 1.0030 1.0700 28,400
Weekend
Weekend
0.9800 1.0400 0.9350 0.9860 103,100
0.9700 1.0400 0.9600 0.9920 69,100
1.0200 1.0400 0.9500 1.0100 68,400
0.9900 1.0400 0.9450 1.0200 36,100
1.1070 1.1400 0.9400 1.0100 125,200
Weekend
Weekend
1.0900 1.1540 1.0700 1.1200 57,300
1.1100 1.1800 1.0800 1.1200 72,600
1.1600 1.1650 1.1200 1.1200 44,100
1.1550 1.1780 1.1000 1.1500 36,400
1.1400 1.1920 1.1100 1.1300 38,400
Weekend
Weekend
1.1800 1.1900 1.0700 1.1500 85,000
1.1700 1.1900 1.1550 1.1700 50,500
1.2600 1.2600 1.1300 1.1700 161,500
1.3200 1.3200 1.2500 1.2800 38,900
1.3700 1.3900 1.2400 1.3200 58,400
Weekend
Weekend
1.4000 1.4000 1.2100 1.3600 136,000
1.5600 1.5600 1.3900 1.4100 200,600
1.6200 1.6200 1.5400 1.5550 60,400
1.5700 1.5900 1.5500 1.5900 40,300
1.6250 1.6300 1.5500 1.5650 51,400
Weekend
Weekend
1.6400 1.6400 1.5750 1.5900 100,600
4 · 6-K Next filing day · accepted 23 Oct, 20:45 ET FORM 6-K ↗
1.5400 1.7700 1.5400 1.6600 94,400
1.5900 1.6300 1.5400 1.5800 75,600
1.7000 1.7300 1.5900 1.5900 119,700
1.6900 1.7300 1.6600 1.6800 53,000
Weekend
Weekend
3 · 6-K After-hours · 16:30 ET FORM 6-K ↗
1.7000 1.7650 1.6100 1.7000 107,000
1.7800 1.8400 1.7000 1.7400 81,900
1.7800 1.8000 1.7100 1.7600 83,600
1.6600 1.7900 1.6000 1.7400 127,200
1.6300 1.7500 1.5800 1.7100 135,800
Weekend
Weekend
1.7300 1.7640 1.5320 1.5600 327,500
1.7900 1.9000 1.7200 1.7900 359,400
1.8400 1.9590 1.7900 1.9000 1,095,300
1.8600 1.8600 1.7500 1.7800 379,100
1.8600 1.9600 1.8000 1.9000 133,900
Weekend
Weekend
1.8200 1.8900 1.7800 1.8000 43,500
1.8000 1.8600 1.7800 1.8200 97,000
1.6800 1.8700 1.6800 1.8000 95,000
1.6800 1.7100 1.6200 1.6650 62,700
1.7600 1.7600 1.6250 1.7000 213,900
Weekend
Weekend
1.8200 1.8400 1.7200 1.7500 203,800
1.8900 1.9200 1.8200 1.8500 159,100
2 · 6-K After-hours · 17:00 ET FORM 6-K ↗
1.8400 1.9300 1.8100 1.8900 109,000
1.8300 1.9100 1.7700 1.8400 241,700
2.0800 2.0800 1.9000 1.9200 351,000
Weekend
Weekend
2.1000 2.2800 2.0800 2.1200 762,400
1 · 20-F/A After-hours · 16:06 ET FORM 20-F/A ↗
1.9900 2.2000 1.9500 2.1000 421,900
2.0700 2.2500 2.0500 2.1400 598,500
2.0400 2.5900 1.9300 2.3600 14,184,300
2.0100 2.0200 1.8600 1.8900 163,100
Weekend
Weekend
2.0400 2.1700 2.0200 2.0500 172,300
2.0500 2.1600 1.9900 2.0400 428,000
2.3400 2.5900 1.8660 2.1300 14,775,900
1.9800 2.0950 1.9300 2.0800 403,100
2.0100 2.2000 1.9900 2.0400 247,200
Weekend
Weekend
2.0300 2.0700 2.0000 2.0200 13,600
2.0300 2.3800 1.9200 2.0900 370,300
1.9700 1.9990 1.9300 1.9700 16,200
2.0000 2.0100 1.9600 2.0100 5,900
No trading
Weekend
Weekend
2.0200 2.0200 2.0000 2.0150 2,000
1.9800 2.0900 1.9600 2.0700 43,500
1.9900 2.0100 1.9400 1.9650 17,400
2.0600 2.1200 2.0000 2.0100 52,700
2.0000 2.1200 1.9900 2.1200 34,900
Weekend
Weekend
1.9500 2.0500 1.9500 2.0300 43,100
1.9110 1.9640 1.9000 1.9300 67,200
1.9000 1.9250 1.8820 1.8820 11,500
1.8200 1.9000 1.7800 1.9000 46,900
1.8500 1.8500 1.7900 1.8100 9,300
Weekend
Weekend
1.9050 1.9590 1.8050 1.8310 18,300
1.8400 1.9400 1.8400 1.8810 14,500
1.8600 1.9400 1.7700 1.8200 34,200
1.8600 1.9700 1.8500 1.8500 13,300
1.8500 1.9900 1.7900 1.9000 69,200
Weekend
Weekend
1.7800 1.8100 1.7550 1.8100 3,800
1.8500 1.8500 1.7200 1.8100 20,700
1.9200 1.9400 1.8500 1.8500 19,200
1.9800 1.9900 1.9150 1.9300 3,500
1.9500 2.0190 1.9500 2.0000 7,300
Weekend
Weekend
2.0100 2.0300 1.9400 1.9500 113,300
2.0600 2.2300 1.9710 2.0100 196,400
2.0400 2.1100 2.0200 2.0400 20,600
2.1500 2.1500 2.0300 2.0500 45,300
2.0200 2.1300 1.9800 2.1300 36,600
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.

16 F-3 FORM F-3 (opens SEC filing in a new tab) After market open · 09:55 ET Summarise
15 20-F FORM 20-F (opens SEC filing in a new tab) After-hours · 16:33 ET Summarise
14 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
13 424B5 424B5 (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
12 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 08:31 ET Summarise
11 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
10 424B5 424B5 (opens SEC filing in a new tab) Pre-market · 09:16 ET Summarise
9 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
8 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
7 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 08:30 ET Summarise
6 6-K FORM 6-K (opens SEC filing in a new tab) Pre-market · 08:11 ET Summarise
5 6-K FROM 6-K (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
4 6-K FORM 6-K (opens SEC filing in a new tab) Next filing day · accepted 23 Oct, 20:45 ET Summarise
3 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
2 6-K FORM 6-K (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
1 20-F/A FORM 20-F/A (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise