GT Biopharma, Inc GTBP

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GT Biopharma, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 0.3295 · FX 1 USD = 1.290540 SGD · about SGD 0.4252 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 2.10 → 0.33 · -84.3%
2.1001.1860.272 1 2 3 4 5 6,7 8 9 10 11 12 13,14 15,16 17 18 19 20 21 22 23 24 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 27 Jul 2025 — 28 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
0.3333 0.3379 0.3146 0.3295 250,817
Weekend
Weekend
0.3500 0.3500 0.3220 0.3240 415,600
0.3440 0.3500 0.3250 0.3350 498,300
0.3580 0.3600 0.3410 0.3460 503,200
0.3480 0.3670 0.3390 0.3580 474,400
0.3550 0.3600 0.3370 0.3410 404,400
Weekend
Weekend
0.3600 0.3760 0.3500 0.3560 497,900
0.3510 0.3890 0.3300 0.3840 745,400
0.3670 0.3850 0.3400 0.3500 1,095,900
0.3850 0.4450 0.3520 0.3690 1,960,800
0.4110 0.4250 0.3730 0.3880 1,720,500
Weekend
Weekend
0.4500 0.4580 0.4130 0.4250 1,043,300
0.4740 0.4790 0.4310 0.4470 844,300
0.4520 0.4720 0.4420 0.4680 653,000
0.4710 0.4830 0.4400 0.4600 772,000
0.4890 0.4950 0.4600 0.4900 1,418,300
Weekend
Weekend
No trading
24 · DEF 14A After-hours · 16:30 ET DEF 14A ↗
0.4980 0.5000 0.4600 0.4720 851,400
0.4900 0.4970 0.4510 0.4940 1,283,200
0.4420 0.5000 0.4300 0.4900 1,713,300
0.4500 0.4580 0.4210 0.4400 816,800
Weekend
Weekend
0.4300 0.4600 0.4200 0.4300 842,800
0.4570 0.4570 0.4110 0.4160 1,384,200
0.5100 0.5140 0.4440 0.4560 1,303,200
0.5170 0.5190 0.4820 0.4940 1,091,200
0.5350 0.5570 0.4850 0.4910 2,978,800
Weekend
Weekend
No trading
23 · PRE 14A After-hours · 16:45 ET PRE 14A ↗
0.4800 0.5140 0.4500 0.5140 1,977,600
0.4500 0.4850 0.4400 0.4590 1,029,400
0.4800 0.4820 0.4420 0.4460 1,290,100
0.4780 0.4870 0.4500 0.4690 2,337,600
Weekend
Weekend
22 · 8-K After-hours · 16:30 ET 8-K ↗
0.4500 0.4500 0.4250 0.4470 1,432,700
0.4050 0.4400 0.3910 0.4350 1,281,300
0.4180 0.4300 0.4050 0.4150 549,700
0.4350 0.4350 0.4030 0.4180 1,047,400
0.4540 0.4690 0.4210 0.4250 1,297,100
Weekend
Weekend
0.4700 0.4700 0.4260 0.4360 1,330,500
0.4310 0.4800 0.4230 0.4770 1,650,100
0.4670 0.4690 0.4390 0.4390 951,600
0.4520 0.4740 0.4220 0.4670 2,189,900
0.4900 0.4950 0.4300 0.4420 3,159,700
Weekend
Weekend
0.4450 0.4950 0.4450 0.4780 3,445,800
0.4010 0.4500 0.3700 0.4450 1,589,000
0.3990 0.4050 0.3900 0.3950 641,300
0.4700 0.4700 0.3850 0.3920 1,496,400
No trading
Weekend
Weekend
0.4400 0.4890 0.4360 0.4400 2,556,600
21 · 8-K Pre-market · 08:00 ET 8-K ↗
0.4100 0.4380 0.4050 0.4330 944,600
0.4390 0.4600 0.4100 0.4190 2,406,600
0.3850 0.4450 0.3610 0.4300 3,613,000
0.3910 0.4100 0.3610 0.3640 1,651,900
Weekend
Weekend
0.4510 0.4640 0.3750 0.3940 4,006,300
20 · 10-Q Pre-market · 08:00 ET 10-Q ↗
0.3740 0.4800 0.3710 0.4390 14,758,500
19 · 424B3 After-hours · 17:18 ET 424B3 ↗
0.3170 0.3230 0.3100 0.3130 361,600
0.3330 0.3370 0.3110 0.3230 607,200
0.3800 0.3890 0.3420 0.3430 622,900
Weekend
Weekend
0.3890 0.3900 0.3720 0.3750 496,800
0.4160 0.4160 0.3800 0.3900 594,700
0.3730 0.4180 0.3730 0.4030 1,094,500
0.3900 0.4170 0.3700 0.3800 1,210,800
0.3510 0.3870 0.3500 0.3830 1,048,200
Weekend
Weekend
0.3270 0.3540 0.3200 0.3430 1,082,500
18 · S-1 After-hours · 16:55 ET S-1 ↗
0.2880 0.3190 0.2710 0.3080 1,442,300
0.2900 0.2900 0.2610 0.2720 482,600
0.2750 0.2930 0.2700 0.2830 571,000
0.3150 0.3170 0.2710 0.2800 1,060,800
Weekend
Weekend
0.3530 0.3660 0.3130 0.3130 1,447,100
0.3670 0.3800 0.3570 0.3590 288,500
0.3620 0.3860 0.3610 0.3740 475,500
0.3640 0.3890 0.3620 0.3730 754,800
0.3790 0.3800 0.3640 0.3710 292,500
Weekend
Weekend
0.3930 0.4000 0.3730 0.3790 352,700
0.3890 0.4000 0.3800 0.3990 448,200
0.3700 0.3900 0.3700 0.3880 306,400
0.3810 0.3900 0.3700 0.3890 282,800
0.3630 0.3890 0.3510 0.3890 598,000
Weekend
Weekend
0.4000 0.4090 0.3610 0.3690 980,700
0.4000 0.4030 0.3800 0.3900 879,000
0.4210 0.4270 0.4000 0.4050 472,000
0.4400 0.4400 0.4030 0.4130 500,400
17 · 8-K Pre-market · 07:05 ET 8-K ↗
0.4560 0.4590 0.4400 0.4450 339,100
Weekend
Weekend
No trading
0.4160 0.4500 0.4100 0.4500 407,600
0.4100 0.4250 0.4000 0.4090 596,300
0.4150 0.4200 0.4000 0.4080 463,800
0.4000 0.4220 0.4000 0.4140 410,600
Weekend
Weekend
0.4400 0.4500 0.4000 0.4090 1,127,900
0.4620 0.4620 0.4420 0.4460 411,600
0.4700 0.4700 0.4510 0.4650 371,700
0.4690 0.4950 0.4560 0.4750 1,029,600
0.4420 0.4730 0.4420 0.4690 746,500
Weekend
Weekend
0.4300 0.4600 0.4200 0.4600 1,663,900
0.4570 0.4600 0.4170 0.4250 557,800
0.4300 0.4350 0.4200 0.4290 207,300
0.4300 0.4380 0.4220 0.4340 392,100
0.4050 0.4300 0.4040 0.4250 527,400
Weekend
Weekend
0.4460 0.4460 0.4100 0.4150 549,100
0.4310 0.4400 0.4100 0.4250 561,600
0.4290 0.4400 0.3920 0.4400 907,400
0.4280 0.4400 0.4150 0.4160 711,300
0.4600 0.4680 0.4170 0.4170 1,037,600
Weekend
Weekend
16 · 10-Q/A After-hours · 16:01 ET 10-Q/A ↗ 15 · 10-Q/A After-hours · 16:01 ET 10-Q/A ↗
0.4450 0.4700 0.4330 0.4690 511,200
0.4550 0.4700 0.4450 0.4700 647,400
0.4700 0.4890 0.4450 0.4550 934,500
0.4600 0.4800 0.4400 0.4700 652,200
0.4630 0.4700 0.4500 0.4670 828,100
14 · 10-K Pre-market · 07:05 ET 10-K ↗ 13 · 8-K Pre-market · 07:05 ET 8-K ↗
Weekend
Weekend
0.4900 0.4900 0.4480 0.4780 769,600
0.4800 0.4800 0.4450 0.4690 1,062,600
0.4590 0.4900 0.4500 0.4510 724,000
0.4300 0.4670 0.4280 0.4670 579,800
0.4600 0.4700 0.4200 0.4500 1,283,400
Weekend
Weekend
0.4700 0.4770 0.4500 0.4600 775,300
0.4700 0.4800 0.4530 0.4560 594,800
0.4450 0.4880 0.4200 0.4880 1,006,900
0.4740 0.5900 0.4400 0.4570 2,218,600
No trading
Weekend
Weekend
0.4680 0.4900 0.4570 0.4640 610,500
0.4850 0.4920 0.4430 0.4710 1,057,500
0.5200 0.5200 0.4710 0.4710 869,600
0.4870 0.5300 0.4860 0.5150 693,500
0.5260 0.5260 0.4820 0.4820 630,400
Weekend
Weekend
0.4800 0.5400 0.4550 0.5390 989,200
0.5100 0.5200 0.4800 0.4970 900,700
0.5210 0.5290 0.4600 0.5270 3,318,300
0.5170 0.5460 0.4860 0.5220 6,132,400
0.6500 0.6550 0.4010 0.5100 4,248,800
Weekend
Weekend
12 · 424B3 After-hours · 17:12 ET 424B3 ↗
0.6600 0.7010 0.6570 0.6600 532,700
0.7240 0.7300 0.6720 0.6800 778,700
0.7210 0.7260 0.7100 0.7220 524,000
0.7060 0.7400 0.6900 0.7390 591,700
0.7120 0.7200 0.6900 0.6900 622,800
Weekend
Weekend
0.7100 0.7230 0.6940 0.7120 511,200
0.7060 0.7300 0.6920 0.7200 720,800
11 · S-1 After-hours · 16:15 ET S-1 ↗
0.7250 0.7250 0.6800 0.7100 872,200
0.7500 0.7500 0.7110 0.7250 812,300
No trading
Weekend
Weekend
0.7260 0.7800 0.6800 0.7460 2,055,400
0.7500 0.7500 0.7000 0.7300 9,566,700
0.6810 0.6850 0.6500 0.6600 680,000
0.7300 0.7300 0.6730 0.6850 750,800
0.6900 0.7500 0.6720 0.7300 968,200
Weekend
Weekend
0.6730 0.6900 0.6100 0.6770 1,598,100
10 · 424B3 After-hours · 16:19 ET 424B3 ↗
0.7200 0.7210 0.6610 0.6800 1,434,600
0.8000 0.8000 0.7230 0.7320 1,157,700
0.7900 0.8060 0.7700 0.7940 1,129,100
0.8550 0.8580 0.7620 0.8000 2,040,700
Weekend
Weekend
0.8000 0.8650 0.7900 0.8170 1,429,800
No trading
0.8400 0.8400 0.7500 0.7850 1,683,500
0.9410 0.9440 0.8000 0.8140 2,948,400
0.8720 0.9280 0.8300 0.9200 4,409,400
Weekend
Weekend
0.8650 0.8700 0.7820 0.8320 1,954,700
No trading
0.8200 0.8460 0.7870 0.8450 1,533,600
0.8000 0.8300 0.7840 0.8050 2,681,000
0.8240 0.8240 0.7530 0.7740 4,642,300
Weekend
Weekend
0.7600 0.7700 0.7120 0.7570 2,394,300
0.7410 0.7500 0.7050 0.7350 2,755,400
0.7500 0.7500 0.6800 0.7000 1,929,000
0.6420 0.7340 0.6300 0.7200 2,509,700
0.7000 0.7100 0.6270 0.6270 1,374,300
Weekend
Weekend
0.6610 0.6730 0.6350 0.6600 942,100
0.7000 0.7120 0.6400 0.6500 1,027,100
0.6500 0.7120 0.6400 0.6730 1,270,500
0.6540 0.6700 0.6200 0.6400 812,900
0.6500 0.6560 0.6100 0.6490 1,081,100
Weekend
Weekend
0.6420 0.6480 0.5930 0.6090 1,098,600
0.6400 0.6550 0.5930 0.6300 1,567,500
0.7800 0.7900 0.5810 0.6080 1,946,300
9 · 424B3 After-hours · 17:24 ET 424B3 ↗
0.8000 0.8180 0.7500 0.7560 553,100
0.7850 0.7900 0.7600 0.7800 318,800
Weekend
Weekend
0.7970 0.8190 0.7710 0.7900 258,300
No trading
8 · 8-K After-hours · 16:30 ET 8-K ↗
0.7590 0.8280 0.7400 0.8020 675,900
0.7700 0.7870 0.7400 0.7480 521,400
0.7460 0.7900 0.7370 0.7610 713,300
Weekend
Weekend
0.7180 0.7700 0.6900 0.7340 761,500
0.6900 0.7300 0.6700 0.7050 968,300
0.6880 0.7210 0.6610 0.6800 823,700
0.6700 0.6850 0.6200 0.6560 774,900
0.7550 0.7710 0.6600 0.6870 1,951,600
Weekend
Weekend
7 · 10-Q After-hours · 16:00 ET 10-Q ↗
0.7450 1.1500 0.7070 0.9210 13,255,000
6 · 8-K Pre-market · 09:05 ET 8-K ↗
0.7020 0.7600 0.6960 0.7300 1,259,000
0.6800 0.7390 0.6740 0.7250 604,800
0.6600 0.6800 0.6300 0.6760 278,500
0.6020 0.6600 0.6020 0.6580 604,700
Weekend
Weekend
0.5450 0.6200 0.5400 0.6200 381,300
0.6100 0.6100 0.5490 0.5540 301,900
0.6000 0.6170 0.6000 0.6100 182,700
0.6050 0.6230 0.6000 0.6180 237,700
0.6440 0.6500 0.6060 0.6230 402,000
Weekend
Weekend
0.6350 0.6350 0.6040 0.6270 177,100
0.6000 0.6310 0.5900 0.6280 427,300
0.6670 0.6730 0.5870 0.5970 834,500
0.6900 0.7000 0.6670 0.6670 218,200
0.6980 0.7030 0.6670 0.6940 398,900
Weekend
Weekend
5 · S-1 After-hours · 16:15 ET S-1 ↗
0.7100 0.7200 0.6610 0.6850 743,500
0.6700 0.7770 0.6500 0.7310 1,131,200
0.7100 0.7100 0.6600 0.6710 542,000
0.7200 0.7200 0.6730 0.6990 591,800
0.6960 0.7300 0.6840 0.7300 884,200
Weekend
Weekend
0.6780 0.7150 0.6700 0.6910 360,200
0.7340 0.7340 0.6730 0.6820 699,000
0.7100 0.7650 0.6590 0.7340 1,492,800
0.7030 0.7500 0.6600 0.7200 785,200
0.7000 0.7400 0.6800 0.7380 826,900
Weekend
Weekend
0.7600 0.7650 0.6440 0.6800 1,603,900
0.8840 0.8900 0.7000 0.7510 6,941,700
0.7890 1.3700 0.6900 1.0800 67,194,700
0.7510 0.8000 0.6500 0.7520 2,732,800
0.7000 0.7190 0.6400 0.7060 1,182,500
Weekend
Weekend
0.6500 0.6580 0.6200 0.6390 320,900
0.6500 0.6800 0.6250 0.6390 366,900
0.5900 0.6600 0.5900 0.6500 627,300
0.5790 0.6150 0.5700 0.5870 374,800
0.8190 0.8200 0.5500 0.5800 2,075,400
Weekend
Weekend
4 · 8-K After-hours · 16:15 ET 8-K ↗
0.7600 0.8600 0.7350 0.7680 1,992,800
0.7990 0.7990 0.7220 0.7610 181,300
0.8400 0.8500 0.7920 0.8000 112,500
3 · 8-K After-hours · 17:30 ET 8-K ↗
0.8150 0.8290 0.7910 0.8250 129,900
0.8100 0.8130 0.7800 0.8000 134,500
Weekend
Weekend
0.8300 0.8310 0.7800 0.7820 253,900
0.8000 0.8300 0.7820 0.8160 113,900
0.8000 0.8400 0.7800 0.7890 305,800
0.8000 0.8500 0.8000 0.8250 285,900
0.8050 0.8290 0.7800 0.8000 311,300
Weekend
Weekend
0.7400 0.8090 0.7300 0.8050 292,400
0.8000 0.8000 0.6300 0.7450 600,400
0.7380 0.9500 0.7350 0.8000 1,078,800
0.7880 0.8430 0.7120 0.7480 197,700
0.8010 0.8700 0.6670 0.8620 908,400
Weekend
Weekend
0.9300 0.9500 0.8930 0.9450 3,358,000
0.9700 0.9700 0.9120 0.9290 96,200
0.9100 0.9900 0.8810 0.9400 185,300
0.9300 0.9300 0.8950 0.8990 150,400
No trading
Weekend
Weekend
2 · 8-K After-hours · 16:15 ET 8-K ↗
0.9600 0.9680 0.9100 0.9350 100,200
1.1400 1.1400 0.9600 0.9670 195,300
1.1500 1.1800 1.1000 1.1400 100,900
1.1300 1.1400 1.1000 1.1400 66,100
1.1100 1.1300 1.0800 1.0900 99,700
Weekend
Weekend
1.0900 1.1500 1.0900 1.1100 96,200
1.1300 1.1400 1.0650 1.0700 106,200
1.3000 1.3200 1.0500 1.0800 488,100
1.4800 1.4800 1.3200 1.3300 154,700
1.3500 1.5260 1.3500 1.4850 90,400
Weekend
Weekend
1.4600 1.4600 0.9600 1.3400 263,700
1 · 10-Q After-hours · 16:01 ET 10-Q ↗
1.6800 1.7000 1.3800 1.4500 132,400
1.7000 1.7350 1.6800 1.6800 38,900
1.7700 1.7700 1.6800 1.7490 56,200
1.7400 1.7800 1.7100 1.7400 45,000
Weekend
Weekend
1.8900 1.8900 1.7400 1.7900 26,600
1.7700 1.8300 1.6800 1.8300 33,300
1.7700 1.8360 1.7200 1.7400 98,700
1.7700 1.7800 1.7200 1.7700 41,500
1.8100 1.8500 1.7600 1.7800 54,600
Weekend
Weekend
1.8400 1.9190 1.7750 1.8100 38,700
1.9200 1.9900 1.8600 1.8600 118,400
2.1100 2.1100 1.9600 2.0000 119,400
2.0900 2.1000 1.9700 2.0400 70,900
2.0400 2.2100 2.0200 2.1000 81,600
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.

24 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
23 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:45 ET Summarise
22 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
20 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
19 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:18 ET Summarise
18 S-1 S-1 (opens SEC filing in a new tab) After-hours · 16:55 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
16 10-Q/A 10-Q/A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
15 10-Q/A 10-Q/A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
14 10-K 10-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
12 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:12 ET Summarise
11 S-1 S-1 (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
10 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
9 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:24 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
7 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:05 ET Summarise
5 S-1 S-1 (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:30 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
1 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise