Jasper Therapeutics, Inc. - Class A JSPR

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Jasper Therapeutics, Inc. - Class A Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 0.6880 · FX 1 USD = 1.288650 SGD · about SGD 0.8866 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 3.10 → 0.69 · -77.8%
3.1101.7260.341 1,2 3 4,5 6,7 8 9 10 11,12 13 14,15 16 17 18 19,20 21 22 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
0.7050 0.7400 0.6810 0.6880 667,900
0.7350 0.7700 0.7090 0.7290 527,200
0.7600 0.8100 0.7000 0.7450 1,086,200
0.7720 0.8850 0.7600 0.7700 1,720,700
0.8700 0.8700 0.7500 0.8140 2,657,900
Weekend
Weekend
0.7200 1.0300 0.5810 0.8850 29,907,300
22 · 8-K Next filing day · accepted 16 Jul, 21:50 ET CURRENT REPORT ↗ 21 · 8-K After-hours · 17:15 ET CURRENT REPORT ↗
0.6760 0.8100 0.6600 0.7740 16,994,900
0.7220 0.7340 0.6200 0.6920 620,400
0.6170 0.7600 0.5930 0.7230 3,127,000
0.6000 0.6800 0.5800 0.6080 1,348,400
Weekend
Weekend
0.5900 0.6800 0.5410 0.5800 1,462,900
0.5300 0.5960 0.5050 0.5810 471,400
0.4820 0.5680 0.4350 0.5150 747,900
0.4600 0.4880 0.4450 0.4820 196,700
0.4490 0.4750 0.4230 0.4660 348,500
Weekend
Weekend
No trading
0.4600 0.4800 0.4240 0.4280 217,400
0.4290 0.4700 0.4100 0.4550 341,900
0.3980 0.4390 0.3650 0.4210 266,400
0.3490 0.4200 0.3150 0.4200 974,800
Weekend
Weekend
0.4400 0.4540 0.3400 0.3410 1,353,000
0.4910 0.5190 0.4400 0.4430 316,200
0.5040 0.5210 0.4800 0.4910 279,300
0.5000 0.5050 0.4570 0.4890 650,200
0.4530 0.6000 0.4530 0.5020 1,678,700
Weekend
Weekend
No trading
0.4660 0.4770 0.4410 0.4530 286,600
0.4610 0.4910 0.4410 0.4710 202,500
0.4700 0.4740 0.4310 0.4520 265,300
20 · DEFA14A After-hours · 16:03 ET DEFINITIVE ADDITIONAL MATERIALS ↗ 19 · DEF 14A After-hours · 16:03 ET PROXY STATEMENT ↗
0.4530 0.5210 0.4530 0.4810 509,200
Weekend
Weekend
0.4600 0.4800 0.4500 0.4580 237,100
0.4600 0.4900 0.4550 0.4660 196,800
0.4460 0.4920 0.4460 0.4640 320,800
18 · 8-K After-hours · 16:05 ET CURRENT REPORT ↗
0.4680 0.5000 0.4200 0.4660 407,300
0.4970 0.5050 0.4550 0.4680 570,400
Weekend
Weekend
0.4810 0.5000 0.4700 0.4930 558,800
0.5230 0.5920 0.4600 0.4810 865,000
0.5530 0.6400 0.4900 0.5320 1,639,800
0.5940 0.6100 0.4300 0.5510 2,850,900
0.8200 0.8580 0.5340 0.5340 2,486,900
17 · 8-K Pre-market · 08:01 ET CURRENT REPORT ↗
Weekend
Weekend
0.9090 0.9140 0.8200 0.8290 337,900
0.8840 0.9240 0.8800 0.8900 230,600
0.9270 0.9560 0.8900 0.9020 232,300
0.9100 0.9410 0.8800 0.9130 114,600
No trading
Weekend
Weekend
0.8800 1.0200 0.8700 0.9030 680,200
16 · 8-K After-hours · 16:01 ET CURRENT REPORT ↗
0.8600 0.9000 0.8330 0.8730 99,400
0.8200 0.8780 0.8200 0.8720 77,900
0.8000 0.8300 0.7650 0.8180 158,800
0.8650 0.8650 0.7800 0.8070 213,100
Weekend
Weekend
0.9160 0.9300 0.8050 0.8500 661,800
15 · 8-K After-hours · 16:05 ET CURRENT REPORT ↗ 14 · 10-Q After-hours · 16:05 ET QUARTERLY REPORT ↗
0.9220 0.9590 0.8730 0.9590 180,500
0.9500 0.9500 0.8800 0.9200 264,400
0.9410 0.9410 0.8820 0.9130 205,800
0.9270 0.9470 0.8800 0.9420 213,500
Weekend
Weekend
0.9000 0.9620 0.8910 0.9260 113,900
0.9520 0.9750 0.9000 0.9080 154,700
0.9800 1.0000 0.9410 0.9470 274,700
1.0100 1.0300 0.9370 0.9660 193,800
0.9650 0.9970 0.9200 0.9860 229,300
Weekend
Weekend
0.9400 0.9630 0.9200 0.9300 222,700
13 · 10-K/A After-hours · 16:01 ET AMENDMENT NO. 1 TO FORM 10-K ↗
0.9100 0.9470 0.9010 0.9360 112,700
0.9500 0.9500 0.8590 0.8900 130,000
0.9000 0.9880 0.9000 0.9300 181,200
0.8600 0.9580 0.8490 0.9300 354,100
Weekend
Weekend
0.9000 0.9080 0.8130 0.8380 625,300
1.0000 1.0000 0.9000 0.9050 212,100
0.9820 1.0000 0.9300 0.9790 327,900
1.0600 1.0600 0.9600 0.9600 371,500
1.0300 1.1200 0.9610 1.0600 640,700
Weekend
Weekend
1.0000 1.0500 0.9610 1.0200 457,200
1.1100 1.1100 0.9500 0.9660 541,400
0.9450 1.0500 0.8910 1.0500 499,600
0.9400 0.9600 0.8500 0.9320 548,000
0.7900 0.9300 0.7840 0.9190 627,000
Weekend
Weekend
0.8500 0.8680 0.7470 0.8020 800,700
0.7190 0.8480 0.7060 0.8240 1,332,300
0.7000 0.7160 0.6600 0.7070 698,900
0.6800 0.6840 0.6230 0.6680 1,036,400
0.7200 0.7200 0.6510 0.6840 1,282,600
Weekend
Weekend
No trading
0.7930 0.8110 0.6860 0.6880 891,100
0.8870 0.9180 0.8000 0.8000 671,500
0.8550 0.9490 0.8060 0.8760 664,600
12 · 8-K After-hours · 17:33 ET CURRENT REPORT ↗ 11 · 10-K After-hours · 17:32 ET ANNUAL REPORT ↗
1.0900 1.0900 0.8780 0.9000 837,200
Weekend
Weekend
1.1200 1.1200 1.0400 1.0500 526,900
1.1100 1.1450 1.0700 1.1100 401,300
1.1700 1.1950 1.0900 1.0900 315,300
1.1900 1.2000 1.1400 1.1500 222,800
1.2300 1.2350 1.1700 1.1900 256,600
Weekend
Weekend
1.2200 1.2700 1.2100 1.2300 216,300
1.2200 1.2450 1.1800 1.2200 191,600
1.2600 1.2600 1.2000 1.2200 257,900
1.2200 1.2700 1.2200 1.2500 173,100
1.2100 1.2400 1.1700 1.2400 255,400
Weekend
Weekend
1.3000 1.3300 1.2000 1.2200 385,300
1.3100 1.3350 1.2600 1.2700 234,500
1.3800 1.3950 1.3100 1.3400 169,000
1.3200 1.4100 1.3100 1.3700 447,800
1.3800 1.3900 1.3000 1.3100 378,400
Weekend
Weekend
1.3600 1.4400 1.3500 1.3800 1,174,100
1.4300 1.4300 1.3300 1.3700 756,900
1.3600 1.4500 1.3200 1.4200 314,600
1.3200 1.3600 1.2950 1.3300 213,000
1.3400 1.3800 1.3200 1.3500 110,800
Weekend
Weekend
1.3500 1.4000 1.3100 1.3800 177,900
1.4100 1.4100 1.3550 1.3700 119,600
1.4000 1.4200 1.3500 1.4000 130,600
1.3600 1.4000 1.3300 1.3800 196,000
1.3400 1.4000 1.3200 1.3700 285,700
Weekend
Weekend
1.3900 1.4390 1.2700 1.3200 208,600
1.3500 1.4100 1.3100 1.4000 130,400
1.2700 1.3950 1.2000 1.3400 759,800
1.1600 1.2800 1.1100 1.2100 562,500
No trading
Weekend
Weekend
1.1900 1.2500 1.1400 1.1400 529,800
1.2500 1.2750 1.1550 1.1700 877,900
1.3250 1.3350 1.2400 1.2400 825,600
1.3500 1.3800 1.2900 1.3100 745,900
1.3400 1.3700 1.2900 1.3600 277,100
Weekend
Weekend
1.3000 1.4100 1.2830 1.3500 526,800
1.3600 1.3700 1.2600 1.2700 787,100
1.4400 1.4400 1.3300 1.3800 608,100
1.4700 1.4900 1.4100 1.4400 265,000
1.4700 1.5300 1.4700 1.4700 263,200
Weekend
Weekend
1.5400 1.5600 1.4600 1.4800 358,800
1.5700 1.5800 1.5110 1.5500 523,000
1.6500 1.6550 1.5500 1.5900 800,000
1.5300 1.6500 1.5150 1.6400 817,000
1.5600 1.5800 1.5100 1.5300 258,300
Weekend
Weekend
1.5900 1.6100 1.5300 1.5700 345,500
1.5200 1.6250 1.5200 1.5700 556,000
1.5700 1.5800 1.4900 1.5200 472,000
1.5100 1.6050 1.4700 1.5400 621,200
No trading
Weekend
Weekend
1.5100 1.5700 1.4800 1.5300 302,100
1.6100 1.6100 1.4800 1.5200 837,700
1.5700 1.6750 1.5100 1.6200 822,700
1.5300 1.6000 1.4700 1.5600 783,000
1.5400 1.5600 1.4100 1.4800 1,950,300
Weekend
Weekend
1.6700 1.7200 1.4900 1.5100 2,580,800
1.8700 1.9350 1.5010 1.6600 5,817,700
10 · 8-K Pre-market · 07:06 ET CURRENT REPORT ↗ 9 · 8-K After-hours · 16:35 ET CURRENT REPORT ↗
1.9000 2.0700 1.8900 2.0500 900,400
1.8300 1.9200 1.8300 1.9000 315,300
1.8400 1.9200 1.8150 1.8300 332,400
Weekend
Weekend
1.8200 1.8650 1.7850 1.8400 383,800
No trading
1.7800 1.8400 1.7600 1.8300 452,500
1.7800 1.8500 1.7550 1.7900 446,000
1.7300 1.8300 1.7300 1.7600 476,000
Weekend
Weekend
1.8300 1.8400 1.7310 1.7600 443,800
No trading
1.8000 1.8500 1.7800 1.8300 209,700
1.8600 1.8900 1.8100 1.8100 1,601,300
1.8800 1.9300 1.8600 1.9100 583,000
Weekend
Weekend
1.8400 1.9600 1.8050 1.8600 1,395,000
1.7300 1.9200 1.7110 1.8600 1,222,800
1.7000 1.7700 1.6600 1.7200 507,700
1.6400 1.7150 1.6200 1.7100 466,800
1.7600 1.7800 1.6050 1.6400 872,800
Weekend
Weekend
1.8300 1.8900 1.7700 1.7700 574,800
1.8600 1.8900 1.8100 1.8400 549,700
1.7700 1.8800 1.7400 1.8700 830,400
1.7000 1.7900 1.6700 1.7700 652,500
1.7200 1.7450 1.6000 1.7200 915,500
Weekend
Weekend
1.8500 1.9300 1.6910 1.7100 1,132,600
1.6000 1.8900 1.5900 1.8600 1,970,300
1.4800 1.6600 1.3900 1.6500 3,809,500
2.1400 2.4200 1.5500 1.5800 59,461,900
8 · 8-K Pre-market · 07:06 ET CURRENT REPORT ↗
1.8200 1.8200 1.7000 1.7200 2,200,600
Weekend
Weekend
1.7500 1.8800 1.7450 1.8400 193,100
No trading
1.7500 1.7750 1.6800 1.7450 197,100
1.7500 1.8000 1.7100 1.7500 592,500
1.7200 1.8250 1.6950 1.7200 617,000
Weekend
Weekend
1.7000 1.7940 1.6800 1.7000 300,200
1.8500 1.9700 1.7600 1.7600 319,700
1.8300 1.8500 1.7600 1.8500 283,900
1.7100 1.9200 1.7100 1.8300 363,700
1.7000 1.8300 1.6300 1.7900 525,400
Weekend
Weekend
1.5900 1.6800 1.5750 1.6800 341,300
1.7700 1.7700 1.5600 1.6100 480,100
1.7200 1.8250 1.6400 1.7700 648,300
1.7800 1.8000 1.6800 1.7000 351,400
1.9300 1.9780 1.7200 1.7800 662,600
7 · 10-Q Pre-market · 08:17 ET QUARTERLY REPORT ↗ 6 · 8-K Pre-market · 08:05 ET CURRENT REPORT ↗
Weekend
Weekend
1.8200 1.8250 1.6000 1.7800 543,000
2.0000 2.0000 1.8100 1.8300 262,600
1.9400 1.9700 1.8300 1.9500 450,800
2.0500 2.0560 1.8000 1.8100 495,000
2.2600 2.2640 2.0500 2.1000 324,200
Weekend
Weekend
2.2200 2.3300 2.2000 2.2800 241,700
2.3900 2.4800 2.1600 2.1800 532,200
2.3400 2.5200 2.2900 2.3600 454,200
2.3300 2.3900 2.2900 2.3400 278,900
2.3700 2.4100 2.3000 2.3300 313,700
Weekend
Weekend
2.3900 2.4100 2.3300 2.3700 775,700
2.4000 2.4900 2.3000 2.3300 328,600
2.5200 2.5680 2.3500 2.4000 241,500
2.5200 2.5610 2.4700 2.5400 190,500
2.5300 2.6900 2.4600 2.5100 674,600
Weekend
Weekend
2.4700 2.5100 2.4050 2.4500 218,900
2.6400 2.6550 2.4700 2.4800 245,100
2.5000 2.6100 2.4500 2.6000 480,400
2.3700 2.5100 2.3300 2.5100 451,200
2.4300 2.4300 2.3400 2.4000 219,200
Weekend
Weekend
2.4800 2.5700 2.3400 2.4000 347,300
2.4200 2.5100 2.3450 2.4900 440,200
2.4500 2.4500 2.2900 2.4000 348,200
2.4100 2.4990 2.3200 2.4300 436,900
2.5200 2.5300 2.3900 2.4000 235,300
Weekend
Weekend
2.4300 2.5280 2.4000 2.4900 243,700
2.4000 2.4590 2.3700 2.4200 152,600
2.3600 2.4500 2.3600 2.4000 1,458,800
2.4900 2.5190 2.2700 2.3800 411,500
2.5000 2.5700 2.4400 2.4900 388,900
Weekend
Weekend
2.3600 2.4950 2.2600 2.4700 735,000
2.5000 2.5300 2.2150 2.3300 882,600
2.4100 2.4900 2.3100 2.3300 424,800
2.5200 2.5600 2.3800 2.4000 314,000
2.5000 2.5400 2.4350 2.5400 442,200
Weekend
Weekend
5 · 8-K After-hours · 16:38 ET CURRENT REPORT ↗ 4 · 424B5 After-hours · 16:35 ET PROSPECTUS SUPPLEMENT ↗
2.4500 2.5600 2.3600 2.5000 1,486,500
3 · 424B5 After-hours · 16:45 ET PROSPECTUS SUPPLEMENT ↗
2.4000 2.6050 2.3600 2.5900 353,400
2.4400 2.4500 2.3200 2.3300 166,800
2.3800 2.4950 2.3600 2.4300 116,400
2.4400 2.4850 2.3200 2.3800 196,500
Weekend
Weekend
2.5500 2.5500 2.4300 2.4300 212,200
2.5900 2.6300 2.4700 2.5600 252,300
2.5700 2.6600 2.5210 2.5800 74,500
2.6500 2.6700 2.5000 2.5900 176,600
2.7800 2.7800 2.6100 2.6500 143,000
Weekend
Weekend
2.7200 2.7800 2.6800 2.7200 115,600
2.6900 2.6950 2.5800 2.6900 133,800
2.7600 2.8300 2.6900 2.7200 117,800
2.7700 2.8700 2.7200 2.7600 194,400
No trading
Weekend
Weekend
2.8400 2.8600 2.7800 2.8000 94,700
2.9000 2.9550 2.8300 2.8400 100,300
2.9300 2.9800 2.9000 2.9000 89,500
2.9500 2.9900 2.9150 2.9200 95,700
2.9500 3.0000 2.9100 2.9600 182,400
Weekend
Weekend
2.9600 3.0500 2.9300 2.9300 172,700
2.8200 2.9600 2.8100 2.9500 68,200
2.8300 2.9890 2.8040 2.8500 119,500
2.9500 2.9760 2.8210 2.8500 203,600
3.0800 3.1300 2.9000 2.9300 320,200
Weekend
Weekend
3.0800 3.1400 2.9450 3.1100 323,700
2.9100 3.0400 2.8100 3.0300 298,600
2 · 8-K After-hours · 16:10 ET CURRENT REPORT ↗ 1 · 10-Q After-hours · 16:00 ET QUARTERLY REPORT ↗
2.8500 3.0300 2.8110 2.9700 226,900
2.6700 2.8700 2.6000 2.8500 222,100
2.5400 2.7400 2.5210 2.6300 285,000
Weekend
Weekend
2.7500 2.8400 2.4500 2.4500 591,500
2.9000 2.9690 2.6900 2.7300 380,900
2.9720 2.9800 2.8600 2.9000 160,900
2.9800 3.0400 2.9100 2.9800 188,100
2.8800 2.9800 2.8110 2.9700 190,900
Weekend
Weekend
2.8500 2.9300 2.8100 2.8800 273,900
3.0100 3.0500 2.8500 2.9000 199,100
2.9500 3.1100 2.9150 2.9600 381,600
3.1500 3.1500 2.9150 2.9500 422,900
3.1800 3.2500 3.0700 3.1000 410,500
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.

22 8-K CURRENT REPORT (opens SEC filing in a new tab) Next filing day · accepted 16 Jul, 21:50 ET Summarise
21 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 17:15 ET Summarise
20 DEFA14A DEFINITIVE ADDITIONAL MATERIALS (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
19 DEF 14A PROXY STATEMENT (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
18 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
17 8-K CURRENT REPORT (opens SEC filing in a new tab) Pre-market · 08:01 ET Summarise
16 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
15 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
14 10-Q QUARTERLY REPORT (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
13 10-K/A AMENDMENT NO. 1 TO FORM 10-K (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
12 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 17:33 ET Summarise
11 10-K ANNUAL REPORT (opens SEC filing in a new tab) After-hours · 17:32 ET Summarise
10 8-K CURRENT REPORT (opens SEC filing in a new tab) Pre-market · 07:06 ET Summarise
9 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
8 8-K CURRENT REPORT (opens SEC filing in a new tab) Pre-market · 07:06 ET Summarise
7 10-Q QUARTERLY REPORT (opens SEC filing in a new tab) Pre-market · 08:17 ET Summarise
6 8-K CURRENT REPORT (opens SEC filing in a new tab) Pre-market · 08:05 ET Summarise
5 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 16:38 ET Summarise
4 424B5 PROSPECTUS SUPPLEMENT (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
3 424B5 PROSPECTUS SUPPLEMENT (opens SEC filing in a new tab) After-hours · 16:45 ET Summarise
2 8-K CURRENT REPORT (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
1 10-Q QUARTERLY REPORT (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise