Vistagen Therapeutics, Inc VTGN

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Vistagen Therapeutics, Inc. - Common Stock · Company · Nasdaq · Healthcare / Biotechnology

Paper trade (simulated — no real money)

Fill: USD 0.1797 · FX 1 USD = 1.277900 SGD · about SGD 0.2296 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 4.07 → 0.18 · -95.6%
4.9002.5400.180 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 Oct 25Jan 26Apr 26Jul 26Oct 26

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

Price & SEC Filing History 24 Oct 2025 — 25 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.

Weekend
Weekend
0.1870 0.1886 0.1750 0.1797 1,207,773
0.2000 0.2000 0.1900 0.1900 775,100
0.2000 0.2100 0.1900 0.1900 497,400
0.2000 0.2100 0.2000 0.2000 571,900
0.2100 0.2100 0.1900 0.2000 1,037,900
Weekend
Weekend
0.2100 0.2200 0.2000 0.2000 558,500
0.2100 0.2200 0.2000 0.2100 877,100
0.2100 0.2100 0.2000 0.2100 983,200
0.2200 0.2300 0.2100 0.2100 1,032,200
0.2400 0.2400 0.2200 0.2300 738,000
Weekend
Weekend
37 · 8-K After-hours · 21:15 ET 8-K ↗
0.2400 0.2400 0.2400 0.2400 403,300
0.2500 0.2500 0.2400 0.2500 959,100
0.2500 0.2600 0.2400 0.2500 774,600
0.2700 0.2700 0.2500 0.2500 1,595,700
0.2800 0.2800 0.2600 0.2600 1,916,600
Weekend
Weekend
0.2800 0.3000 0.2800 0.2800 1,250,500
0.3100 0.3100 0.2800 0.2800 2,031,000
0.2900 0.3200 0.2800 0.3100 2,427,300
0.2900 0.3000 0.2800 0.3000 2,025,600
0.2700 0.3200 0.2700 0.3000 6,030,100
Weekend
Weekend
0.2800 0.3000 0.2600 0.2700 5,572,000
36 · 8-K Pre-market · 09:11 ET 8-K ↗
0.3500 0.3600 0.2700 0.3000 20,471,700
35 · 8-K Pre-market · 07:05 ET 8-K ↗
0.3900 0.5500 0.3400 0.3700 574,960,000
34 · 8-K After-hours · 16:22 ET 8-K ↗
0.2500 0.2700 0.2400 0.2500 5,999,800
0.2400 0.2400 0.2300 0.2300 332,100
Weekend
Weekend
0.2300 0.2500 0.2300 0.2400 718,200
0.2400 0.2400 0.2300 0.2300 362,500
0.2400 0.2400 0.2300 0.2300 548,700
0.2500 0.2500 0.2400 0.2400 194,400
0.2500 0.2500 0.2400 0.2400 238,800
Weekend
Weekend
0.2400 0.2500 0.2300 0.2400 310,000
33 · 8-K Next filing day · accepted 10 Sep, 19:24 ET 8-K ↗
0.2400 0.2400 0.2300 0.2400 339,900
0.2400 0.2500 0.2300 0.2400 801,600
0.2500 0.2500 0.2400 0.2400 319,300
No trading
Weekend
Weekend
0.2500 0.2600 0.2400 0.2400 347,200
0.2500 0.2500 0.2400 0.2500 250,600
0.2400 0.2500 0.2400 0.2500 197,900
0.2500 0.2500 0.2400 0.2400 596,000
0.2600 0.2600 0.2400 0.2600 466,500
Weekend
Weekend
0.2600 0.2600 0.2500 0.2500 449,200
0.2600 0.2700 0.2500 0.2600 339,100
0.2500 0.2700 0.2400 0.2600 562,400
0.2500 0.2500 0.2400 0.2500 712,400
0.2400 0.2500 0.2400 0.2400 477,000
Weekend
Weekend
0.2400 0.2500 0.2400 0.2400 990,800
0.2500 0.2500 0.2300 0.2400 705,700
0.2500 0.2500 0.2400 0.2400 404,900
0.2500 0.2700 0.2400 0.2400 2,298,900
0.2700 0.2700 0.2600 0.2600 1,035,000
Weekend
Weekend
32 · 10-Q After-hours · 16:12 ET 10-Q ↗
0.2700 0.2700 0.2600 0.2700 913,200
31 · 8-K Pre-market · 08:40 ET 8-K ↗
0.2600 0.2700 0.2600 0.2700 304,000
0.2700 0.2700 0.2600 0.2600 759,100
0.2700 0.2800 0.2500 0.2700 1,222,300
0.2900 0.3000 0.2600 0.2600 2,386,300
Weekend
Weekend
0.2900 0.3100 0.2800 0.2900 2,555,900
30 · 8-K After-hours · 16:16 ET 8-K ↗
0.3000 0.3100 0.2800 0.2800 3,573,700
29 · 8-K After-hours · 16:04 ET 8-K ↗
0.2700 0.3000 0.2700 0.3000 5,543,800
0.2600 0.3200 0.2600 0.3000 117,914,600
0.2500 0.2500 0.2400 0.2500 895,700
Weekend
Weekend
28 · DEFA14A After-hours · 16:11 ET DEFA14A ↗ 27 · DEF 14A After-hours · 16:10 ET DEF 14A ↗
0.2400 0.2500 0.2400 0.2400 794,200
26 · 8-K Pre-market · 08:48 ET 8-K ↗
0.2500 0.2500 0.2400 0.2400 975,700
0.2300 0.2500 0.2300 0.2400 1,082,600
0.2300 0.2400 0.2200 0.2300 1,602,500
0.2300 0.2300 0.2200 0.2300 506,200
Weekend
Weekend
0.2200 0.2300 0.2200 0.2300 1,150,600
0.2400 0.2400 0.2200 0.2300 1,241,100
0.2400 0.2400 0.2300 0.2300 238,300
0.2300 0.2400 0.2300 0.2400 555,500
0.2300 0.2300 0.2300 0.2300 540,700
Weekend
Weekend
0.2400 0.2400 0.2300 0.2300 743,200
0.2500 0.2500 0.2300 0.2400 710,700
0.2500 0.2500 0.2400 0.2500 388,400
0.2500 0.2600 0.2300 0.2500 1,267,500
0.2600 0.2600 0.2500 0.2500 1,428,400
Weekend
Weekend
0.2600 0.2600 0.2500 0.2600 1,591,900
0.2300 0.2500 0.2300 0.2500 2,477,500
0.2300 0.2400 0.2300 0.2300 1,900,100
0.2400 0.2400 0.2300 0.2400 2,140,000
0.2500 0.2600 0.2400 0.2500 3,482,300
Weekend
Weekend
No trading
0.2400 0.2700 0.2400 0.2500 4,402,500
0.2200 0.2700 0.2100 0.2400 14,578,200
0.2100 0.2400 0.2000 0.2300 45,015,900
25 · 8-K Pre-market · 08:28 ET 8-K ↗
0.7100 0.8000 0.7000 0.7600 1,894,700
Weekend
Weekend
0.6300 0.7400 0.6200 0.7000 1,462,600
0.6400 0.6600 0.5900 0.6200 1,032,500
0.6200 0.6700 0.6100 0.6600 546,800
0.6500 0.6900 0.6100 0.6300 901,400
0.7100 0.7100 0.6200 0.6400 1,204,100
Weekend
Weekend
No trading
0.6900 0.7300 0.6700 0.6700 1,085,100
24 · 8-K After-hours · 17:13 ET 8-K ↗
0.7100 0.7200 0.6500 0.6900 2,043,300
0.5800 0.7100 0.5300 0.6900 4,394,300
23 · 10-K After-hours · 16:50 ET 10-K ↗ 22 · 8-K After-hours · 16:35 ET 8-K ↗
0.6000 0.6100 0.5700 0.5700 1,028,700
Weekend
Weekend
0.5700 0.6100 0.5600 0.5800 677,800
0.5300 0.5700 0.5200 0.5700 958,900
0.5400 0.5600 0.5200 0.5400 489,800
21 · 8-K After-hours · 17:04 ET 8-K ↗
0.5400 0.5700 0.5200 0.5400 477,800
0.5800 0.5800 0.5300 0.5400 520,300
Weekend
Weekend
0.5700 0.5800 0.5400 0.5400 494,700
0.5600 0.5800 0.5500 0.5800 292,600
0.5900 0.5900 0.5600 0.5600 572,300
0.6500 0.6600 0.5500 0.5800 1,738,900
0.6300 0.6600 0.6200 0.6500 614,500
Weekend
Weekend
0.6500 0.6600 0.6200 0.6300 651,600
0.6100 0.6500 0.6000 0.6300 753,700
0.6500 0.6500 0.6200 0.6200 327,300
0.6500 0.6500 0.6400 0.6400 287,700
No trading
Weekend
Weekend
0.6300 0.6800 0.6300 0.6500 543,100
0.6400 0.6700 0.6200 0.6400 261,300
0.6300 0.6700 0.6100 0.6400 390,600
20 · 8-K After-hours · 16:30 ET 8-K ↗
0.6000 0.6400 0.5600 0.6300 859,100
0.6300 0.6300 0.5900 0.6000 543,100
Weekend
Weekend
0.6400 0.6400 0.6100 0.6200 661,900
0.6500 0.6800 0.6300 0.6500 560,200
0.6100 0.6600 0.6100 0.6600 885,000
0.6200 0.6600 0.5800 0.6200 6,365,800
19 · 8-K Pre-market · 07:44 ET 8-K ↗
0.6100 0.7000 0.6100 0.6700 1,323,700
Weekend
Weekend
18 · 8-K After-hours · 16:30 ET 8-K ↗
0.6000 0.6400 0.6000 0.6100 1,181,700
0.6100 0.6100 0.5800 0.5900 317,600
0.6000 0.6200 0.5900 0.6100 238,500
0.6300 0.6300 0.6000 0.6000 235,500
0.6300 0.6700 0.6100 0.6200 605,600
Weekend
Weekend
0.6100 0.6400 0.6000 0.6300 427,100
0.6000 0.6200 0.5900 0.6100 225,600
0.5900 0.6000 0.5800 0.6000 377,600
17 · 8-K After-hours · 16:13 ET 8-K ↗
0.5800 0.6100 0.5700 0.6000 505,000
0.6000 0.6000 0.5700 0.5700 392,000
Weekend
Weekend
0.5700 0.5900 0.5500 0.5900 502,100
0.6000 0.6000 0.5600 0.5700 684,100
0.6000 0.6100 0.5700 0.6000 7,713,700
0.6100 0.6300 0.5900 0.6100 368,300
0.6300 0.6400 0.6000 0.6100 603,000
Weekend
Weekend
0.5900 0.6500 0.5900 0.6300 1,191,800
0.6300 0.6300 0.5800 0.6000 397,600
0.6100 0.6300 0.5900 0.6100 935,400
0.5900 0.6200 0.5900 0.6000 980,900
16 · 8-K After-hours · 17:27 ET 8-K ↗
0.5500 0.6300 0.5500 0.5800 1,257,200
Weekend
Weekend
0.5600 0.5800 0.5600 0.5600 290,300
0.5500 0.5700 0.5300 0.5600 168,300
0.5300 0.5600 0.5200 0.5500 383,100
0.5400 0.5800 0.5100 0.5400 587,400
0.5800 0.5800 0.5400 0.5400 570,000
Weekend
Weekend
No trading
15 · 8-K After-hours · 16:16 ET 8-K ↗
0.6000 0.6100 0.5900 0.5900 329,800
0.6000 0.6300 0.5900 0.6000 816,900
0.5400 0.5900 0.5400 0.5700 314,800
0.5700 0.5700 0.5400 0.5500 360,200
Weekend
Weekend
0.5900 0.6100 0.5600 0.5700 532,000
0.6000 0.6200 0.5900 0.6000 381,300
0.6200 0.6500 0.6100 0.6100 388,100
0.6100 0.6300 0.6100 0.6200 178,700
0.6200 0.6300 0.6100 0.6200 247,000
Weekend
Weekend
0.6500 0.6500 0.6000 0.6100 436,900
0.6000 0.6500 0.5900 0.6400 501,100
14 · 8-K After-hours · 16:45 ET 8-K ↗
0.6500 0.6500 0.6000 0.6100 444,000
0.6300 0.6700 0.6200 0.6500 654,000
13 · 8-K After-hours · 16:10 ET 8-K ↗
0.6000 0.6400 0.6000 0.6300 522,300
Weekend
Weekend
0.6300 0.6300 0.6000 0.6100 471,400
0.5900 0.6400 0.5900 0.6300 512,800
0.5600 0.6100 0.5600 0.6000 551,200
12 · 8-K Pre-market · 07:02 ET 8-K ↗
0.6100 0.6300 0.6000 0.6100 290,700
0.5900 0.6200 0.5800 0.6200 448,000
Weekend
Weekend
0.6100 0.6100 0.5900 0.6100 660,900
0.6000 0.6200 0.6000 0.6100 454,900
0.6100 0.6500 0.6100 0.6100 813,900
0.6000 0.6300 0.5800 0.6100 672,500
0.5600 0.6200 0.5600 0.6000 501,300
Weekend
Weekend
0.6000 0.6200 0.5700 0.5900 511,400
0.5800 0.6200 0.5700 0.6100 1,048,600
0.5600 0.5900 0.5400 0.5800 425,600
0.5600 0.5800 0.5500 0.5600 315,900
0.5600 0.5900 0.5500 0.5500 705,400
Weekend
Weekend
0.5900 0.6000 0.5600 0.5600 577,300
11 · 8-K Pre-market · 09:12 ET 8-K ↗
0.5200 0.6000 0.5100 0.5900 1,303,900
0.5100 0.5300 0.5000 0.5200 461,100
0.5200 0.5800 0.4900 0.5300 1,589,200
No trading
Weekend
Weekend
0.4800 0.5200 0.4300 0.5100 3,320,500
10 · 10-Q After-hours · 16:38 ET 10-Q ↗ 9 · 8-K After-hours · 16:35 ET 8-K ↗
0.5800 0.5800 0.5300 0.5500 1,874,000
0.5800 0.5800 0.5400 0.5700 810,900
0.5600 0.6000 0.5400 0.5600 1,062,000
0.5300 0.5600 0.5200 0.5600 787,400
Weekend
Weekend
8 · 8-K After-hours · 16:12 ET 8-K ↗
0.5100 0.5700 0.5000 0.5600 1,739,800
0.5200 0.5400 0.5000 0.5100 968,100
0.5500 0.5600 0.5100 0.5300 849,400
0.5800 0.6000 0.5400 0.5400 1,095,800
0.5600 0.6000 0.5600 0.5800 571,200
Weekend
Weekend
0.5400 0.5700 0.5400 0.5600 712,400
0.5700 0.5800 0.5400 0.5400 1,851,700
0.6100 0.6200 0.5800 0.5900 1,053,800
0.6300 0.6300 0.6000 0.6100 928,400
0.6400 0.6500 0.6200 0.6200 773,200
Weekend
Weekend
0.6600 0.6600 0.6400 0.6500 773,000
0.6400 0.6800 0.6400 0.6600 1,375,600
0.6500 0.6600 0.6200 0.6300 918,900
0.6500 0.6600 0.6400 0.6500 1,021,700
No trading
Weekend
Weekend
0.6800 0.6900 0.6600 0.6600 1,170,500
0.7100 0.7100 0.6700 0.6700 936,300
0.6700 0.7400 0.6700 0.7000 1,854,000
0.7100 0.7100 0.6700 0.6900 1,104,500
0.6800 0.7200 0.6600 0.7000 1,946,100
Weekend
Weekend
7 · 8-K After-hours · 17:26 ET 8-K ↗
0.7100 0.7100 0.6600 0.6600 1,729,100
0.7400 0.7500 0.7000 0.7000 788,900
0.7300 0.7700 0.7200 0.7400 1,603,400
0.7300 0.7400 0.6900 0.7200 1,420,300
0.6900 0.7300 0.6800 0.7200 2,367,800
Weekend
Weekend
0.6600 0.7000 0.6400 0.6800 2,002,900
No trading
0.6700 0.7100 0.6300 0.6600 2,765,100
0.6600 0.6900 0.6600 0.6800 1,678,600
0.7300 0.7300 0.6500 0.6600 3,242,700
Weekend
Weekend
0.7300 0.7500 0.6800 0.7300 2,708,600
No trading
0.7100 0.7400 0.7000 0.7300 1,772,500
0.7500 0.7500 0.7100 0.7100 3,407,600
6 · 8-K After-hours · 17:29 ET 8-K ↗
0.7700 0.8400 0.7500 0.7500 6,159,300
Weekend
Weekend
0.7000 0.7800 0.6800 0.7800 7,468,300
0.8200 0.8400 0.7300 0.7400 11,263,700
0.8800 0.9700 0.7500 0.8600 73,529,200
4.3800 4.5000 4.3000 4.3600 605,400
4.3000 4.4800 4.1600 4.3900 1,001,200
Weekend
Weekend
3.9900 4.3700 3.9600 4.2500 744,400
4.5000 4.5600 3.9100 3.9500 1,464,400
4.5100 4.5600 4.4100 4.5300 499,300
4.2900 4.6000 4.2200 4.5500 766,600
4.4500 4.5500 4.1100 4.2900 761,700
Weekend
Weekend
4.4000 4.4200 4.0200 4.3300 1,006,300
3.8000 4.3200 3.7400 4.2800 1,202,000
5 · 8-K After-hours · 16:47 ET 8-K ↗
3.6000 3.8200 3.3600 3.7300 1,420,200
4.4100 4.4200 3.5400 3.6000 1,554,300
4.8700 4.9100 4.3900 4.4300 660,900
Weekend
Weekend
4.5900 4.9700 4.5800 4.9000 544,600
No trading
4.6800 4.8500 4.5300 4.5400 454,800
4.7000 4.9400 4.5000 4.6900 1,263,400
4.6500 5.1400 4.6500 4.7200 1,577,500
Weekend
Weekend
4.4700 4.6100 4.3400 4.5900 527,700
4.6200 4.8000 4.3300 4.4500 1,695,200
4.6300 4.8800 4.4400 4.5000 724,700
4.4200 4.8800 4.4000 4.6300 1,338,300
3.8500 4.7900 3.7600 4.4200 1,957,900
Weekend
Weekend
3.7200 3.8400 3.6000 3.8000 308,300
4 · 10-Q After-hours · 16:35 ET 10-Q ↗ 3 · 8-K After-hours · 16:34 ET 8-K ↗
4.0400 4.1000 3.7600 3.8000 332,000
4.0400 4.1300 3.9400 4.0700 253,400
3.9600 4.0400 3.8200 4.0300 408,700
4.0100 4.1000 3.8600 3.9800 289,900
Weekend
Weekend
3.9500 4.0200 3.6900 3.9900 595,400
4.2300 4.2300 3.9700 4.0200 270,700
4.1500 4.2800 4.0500 4.1800 283,200
2 · 8-K After-hours · 16:10 ET 8-K ↗
4.1800 4.3000 4.0600 4.0700 402,100
4.2400 4.6500 4.1300 4.2400 1,172,600
Weekend
Weekend
3.7700 3.9700 3.7100 3.9400 231,500
3.9600 4.0700 3.6900 3.7500 340,000
1 · 8-K After-hours · 17:24 ET 8-K ↗
3.9500 4.0900 3.8000 3.9600 547,200
3.8800 4.1000 3.8000 4.0500 433,000
4.1100 4.1100 3.8600 3.9000 458,800
Weekend
Weekend
4.2000 4.3000 4.0500 4.0700 401,200

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.

37 8-K 8-K (opens SEC filing in a new tab) After-hours · 21:15 ET Summarise
36 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:11 ET Summarise
35 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
34 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
33 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 10 Sep, 19:24 ET Summarise
32 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
31 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:40 ET Summarise
30 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
29 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
28 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
27 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
26 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:48 ET Summarise
25 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:28 ET Summarise
24 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:13 ET Summarise
23 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:50 ET Summarise
22 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:44 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:27 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:45 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:02 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:12 ET Summarise
10 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:38 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:26 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:29 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:47 ET Summarise
4 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:34 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:24 ET Summarise