GT Biopharma, Inc GTBP

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GT Biopharma, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 5.4600 · FX 1 USD = 1.277900 SGD · about SGD 6.9773 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 0.69 → 5.46 · 686.7%
11.6305.9360.241 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 Oct 25Jan 26Apr 26Jul 26Oct 26

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

Price & SEC Filing History 25 Oct 2025 — 26 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.

No data yet
Weekend
Weekend
5.5800 5.6000 5.3100 5.4600 63,105
5.3700 5.5700 5.2800 5.5200 69,400
6.8100 6.9000 5.3100 5.4100 170,100
29 · 424B3 After-hours · 21:20 ET 424B3 ↗
6.6300 7.4900 6.6300 7.3100 49,400
7.1700 7.1700 6.6900 6.6900 28,700
Weekend
Weekend
7.1400 7.3200 6.8600 7.0300 55,200
6.5000 7.4000 6.5000 7.3600 63,000
6.4400 6.4400 5.8600 6.2100 42,000
28 · DEF 14A After-hours · 21:00 ET DEF 14A ↗
7.5000 7.5000 6.3280 6.5000 29,500
6.7900 7.0500 6.5000 6.8000 38,000
Weekend
Weekend
27 · S-1 After-hours · 21:27 ET S-1 ↗
5.9600 6.6800 5.8270 6.6800 42,700
6.2000 6.2200 5.8000 5.9600 31,500
6.3000 6.4700 6.2000 6.2000 18,900
6.3100 6.4500 6.2000 6.3700 22,400
6.1300 6.6800 6.1200 6.1600 38,500
Weekend
Weekend
26 · PRE 14A After-hours · 21:26 ET PRE 14A ↗
6.3600 6.5100 6.0000 6.1000 62,100
6.3400 6.4600 6.0000 6.2000 38,700
6.8500 7.0170 6.4700 6.4700 29,500
7.0800 7.1000 6.7100 6.8750 34,400
7.0000 7.2500 6.7900 6.8000 34,900
Weekend
Weekend
25 · 8-K After-hours · 16:10 ET 8-K ↗
6.7900 7.2400 6.5900 6.8900 79,700
7.0100 7.1000 6.5900 6.8300 28,100
7.0800 7.2750 6.8250 7.1000 53,700
7.1200 7.2000 6.3500 7.1800 74,100
24 · 8-K After-hours · 16:10 ET 8-K ↗
7.1600 7.8200 6.8800 7.1800 57,700
Weekend
Weekend
7.5200 7.5200 7.1100 7.1600 37,500
7.8000 7.8000 6.3300 7.4900 110,600
9.0400 9.0400 7.3100 7.8100 107,300
10.4800 10.4800 8.1300 9.0000 334,100
23 · 8-K Pre-market · 08:57 ET 8-K ↗
8.6900 11.9800 8.6500 11.6300 521,300
Weekend
Weekend
6.5900 8.8200 6.5900 8.6100 539,300
6.1300 6.7400 5.5000 6.1800 155,900
5.4700 6.2400 5.1200 5.9800 119,700
5.6200 5.9500 4.9101 5.2395 86,418
No trading
Weekend
Weekend
0.2580 0.2600 0.2220 0.2410 1,159,700
22 · 8-K After market open · 11:45 ET 8-K ↗
0.2810 0.2860 0.2520 0.2520 1,110,300
0.2800 0.2900 0.2800 0.2830 246,100
0.2900 0.2900 0.2800 0.2890 251,600
0.3100 0.3190 0.2860 0.2860 314,500
Weekend
Weekend
0.3060 0.3140 0.3000 0.3000 373,800
0.2950 0.3040 0.2910 0.3020 396,700
0.2980 0.2980 0.2860 0.2900 208,700
0.3150 0.3150 0.2980 0.3000 438,400
0.2900 0.3180 0.2850 0.3060 644,300
Weekend
Weekend
0.2820 0.2950 0.2820 0.2890 252,400
0.2900 0.2900 0.2760 0.2820 197,900
0.2750 0.2900 0.2740 0.2870 360,700
0.2850 0.2850 0.2690 0.2750 535,900
0.2900 0.2930 0.2810 0.2850 542,400
Weekend
Weekend
21 · 8-K After-hours · 16:30 ET 8-K ↗
0.2950 0.3060 0.2870 0.2960 803,600
20 · 10-Q Pre-market · 08:01 ET 10-Q ↗
0.3010 0.3050 0.2950 0.2970 512,400
0.3200 0.3210 0.3010 0.3020 560,100
0.3310 0.3350 0.3100 0.3130 225,300
0.3200 0.3320 0.3110 0.3210 411,400
Weekend
Weekend
0.3010 0.3280 0.3010 0.3200 570,700
0.3180 0.3240 0.3010 0.3010 250,300
0.3240 0.3320 0.3130 0.3180 252,600
0.3100 0.3350 0.3100 0.3260 424,500
0.2910 0.3160 0.2870 0.3090 419,200
Weekend
Weekend
0.3110 0.3110 0.2820 0.2940 602,200
0.3100 0.3190 0.3000 0.3080 457,800
0.3190 0.3190 0.2810 0.3020 662,800
0.3400 0.3400 0.3130 0.3170 468,000
0.3340 0.3380 0.3150 0.3340 367,500
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
19 · 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
18 · 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
17 · 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
16 · 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
15 · 10-Q Pre-market · 08:00 ET 10-Q ↗
0.3740 0.4800 0.3710 0.4390 14,758,500
14 · 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
13 · 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
12 · 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
11 · 10-Q/A After-hours · 16:01 ET 10-Q/A ↗ 10 · 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
9 · 10-K Pre-market · 07:05 ET 10-K ↗ 8 · 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
7 · 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
6 · 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
5 · 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
4 · 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
3 · 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
2 · 10-Q After-hours · 16:00 ET 10-Q ↗
0.7450 1.1500 0.7070 0.9210 13,255,000
1 · 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

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.

29 424B3 424B3 (opens SEC filing in a new tab) After-hours · 21:20 ET Summarise
28 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 21:00 ET Summarise
27 S-1 S-1 (opens SEC filing in a new tab) After-hours · 21:27 ET Summarise
26 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 21:26 ET Summarise
25 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
24 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
23 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:57 ET Summarise
22 8-K 8-K (opens SEC filing in a new tab) After market open · 11:45 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
20 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 08:01 ET Summarise
19 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
18 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:45 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
15 10-Q 10-Q (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
14 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:18 ET Summarise
13 S-1 S-1 (opens SEC filing in a new tab) After-hours · 16:55 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
11 10-Q/A 10-Q/A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
10 10-Q/A 10-Q/A (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
9 10-K 10-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
7 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:12 ET Summarise
6 S-1 S-1 (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
5 424B3 424B3 (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
4 424B3 424B3 (opens SEC filing in a new tab) After-hours · 17:24 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:05 ET Summarise