Profusa, Inc PFSA

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Profusa, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 1.0250 · FX 1 USD = 1.291220 SGD · about SGD 1.3235 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 3637.50 → 1.03 · -100.0%
3637.5001819.2631.025 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 38,39,40 41,42,43 44,45 46 47 48 49 50 51 52 53 54 55 56 57 58,59 60 61 62,63 64,65 66 67 68,69,70,71,72 73 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
1.2800 1.3800 0.9431 1.0250 5,737,588
73 · 8-K Pre-market · 02:08 ET CURRENT REPORT ↗
Weekend
Weekend
1.7600 1.7970 1.6000 1.7100 25,700
1.8200 1.8500 1.7000 1.7600 39,200
1.9500 1.9800 1.8020 1.9000 97,100
2.0300 2.4500 1.8500 2.0000 590,100
1.7700 2.0400 1.6900 1.9500 178,400
Weekend
Weekend
1.8000 1.9000 1.6900 1.7300 61,800
1.8600 1.9700 1.8400 1.8600 88,200
2.0200 2.0250 1.8000 1.8900 172,000
2.2100 2.2300 1.9200 2.0100 172,400
2.0300 2.4000 1.9150 2.2100 310,000
Weekend
Weekend
2.4900 2.5000 1.9300 2.1200 238,800
2.2700 2.6500 2.1600 2.5400 272,400
2.0700 2.5300 2.0000 2.4000 616,200
2.8900 3.0100 2.6800 2.8100 461,100
72 · 424B3 Pre-market · 08:52 ET PROSPECTUS SUPPLEMENT ↗ 71 · 424B3 Pre-market · 08:50 ET PROSPECTUS SUPPLEMENT ↗ 70 · 424B3 Pre-market · 08:43 ET PROSPECTUS SUPPLEMENT ↗ 69 · 424B3 Pre-market · 08:39 ET PROSPECTUS SUPPLEMENT ↗ 68 · 424B3 Pre-market · 08:37 ET PROSPECTUS SUPPLEMENT ↗ 67 · 8-K After-hours · 16:16 ET CURRENT REPORT ↗
2.3250 3.0000 2.2250 2.8500 214,352
Weekend
Weekend
No trading
3.1500 3.1500 2.0000 2.3500 283,996
2.9250 3.3000 2.8000 3.2500 140,160
2.7500 2.9250 2.5750 2.9250 117,764
2.8500 2.9250 2.6500 2.8750 58,688
Weekend
Weekend
2.8750 2.8750 2.6500 2.8500 62,868
2.8250 3.0000 2.6750 2.9500 118,428
2.9250 3.4500 2.8000 3.2500 3,608,392
66 · 8-K After market open · 13:00 ET CURRENT REPORT ↗
3.9250 4.4000 3.2250 3.6000 147,916
4.1250 4.1250 3.8000 4.0500 95,056
Weekend
Weekend
No trading
4.6000 4.9500 4.2750 4.5250 605,152
5.5000 6.6000 5.5000 6.3500 927,036
5.8250 6.1000 5.3250 5.5000 27,788
6.1750 6.1750 5.7500 5.9000 20,940
Weekend
Weekend
6.3250 6.7500 5.4000 5.6000 41,028
6.4250 7.1000 6.2750 6.8000 38,152
6.6750 6.8000 6.2000 6.2250 13,012
6.8750 7.2500 6.5750 6.8750 11,548
7.0000 7.3750 6.5750 7.3750 13,840
65 · 424B3 Pre-market · 08:19 ET PROSPECTUS SUPPLEMENT ↗ 64 · 8-K Pre-market · 07:01 ET CURRENT REPORT ↗
Weekend
Weekend
7.1750 7.5000 6.5750 6.7000 11,104
8.1250 8.1750 7.1500 7.2750 8,280
8.4750 8.4750 7.8750 7.9250 7,412
8.9000 8.9000 7.8750 8.1000 7,572
9.1250 9.1250 8.2750 8.5500 8,000
Weekend
Weekend
9.0000 9.1250 8.6250 8.8500 7,424
9.2750 9.7500 8.5750 9.0000 25,092
9.3000 9.5250 8.8750 9.2750 5,240
63 · DEF 14A After market open · 12:35 ET PROXY STATEMENT ↗ 62 · 8-K After market open · 11:05 ET CURRENT REPORT ↗
9.7000 9.7000 9.2000 9.2000 5,880
No trading
Weekend
Weekend
9.7500 9.7500 9.2500 9.4000 4,924
10.2500 10.5000 9.0250 9.2500 13,976
10.0000 10.4000 9.9250 10.2000 16,348
10.5500 10.8250 9.8250 10.1250 5,584
61 · 424B3 Next filing day · accepted 18 May, 19:50 ET PROSPECTUS SUPPLEMENT ↗ 60 · 8-K After-hours · 17:29 ET CURRENT REPORT ↗
11.0750 11.2000 10.5000 10.9000 3,016
Weekend
Weekend
59 · 10-Q After-hours · 16:45 ET QUARTERLY REPORT ↗
10.7250 11.4000 10.4250 11.1250 5,344
58 · 8-K Pre-market · 08:58 ET CURRENT REPORT ↗
10.7000 10.8500 10.0750 10.7500 6,220
11.2000 11.6500 10.5750 10.7500 7,632
57 · PRE 14A After-hours · 16:08 ET PROXY STATEMENT ↗
11.7500 11.8750 11.1000 11.1500 9,876
12.6500 12.9000 11.7500 12.0000 7,816
Weekend
Weekend
12.5000 12.9000 11.8500 12.9000 11,192
56 · 8-K Pre-market · 06:05 ET CURRENT REPORT ↗
12.0500 12.5000 12.0000 12.2500 5,136
12.7750 13.1000 10.9000 12.1500 17,188
13.3500 13.7500 12.8750 13.0000 16,068
55 · 424B3 After market open · 11:55 ET PROSPECTUS SUPPLEMENT ↗
13.7500 14.8000 13.5500 13.9250 11,568
Weekend
Weekend
54 · S-1/A After market open · 15:28 ET AMENDMENT NO 1 TO FORM S-1 ↗
14.9750 14.9750 13.7500 14.0500 11,364
13.2500 15.5750 13.0000 14.9000 31,620
53 · 8-K After-hours · 17:30 ET CURRENT REPORT ↗
13.4250 14.7500 13.1250 13.5250 37,704
12.9500 16.2000 11.5500 13.8750 967,844
52 · S-1 Pre-market · 08:19 ET REGISTRATION STATEMENT ↗ 51 · 8-K After-hours · 16:30 ET CURRENT REPORT ↗
14.4250 15.0250 12.2500 12.8250 22,080
Weekend
Weekend
50 · 8-K After-hours · 16:32 ET CURRENT REPORT ↗
15.2500 15.4500 14.0000 14.4250 18,432
15.5000 15.5500 14.9000 14.9000 7,468
15.9750 15.9750 15.3000 15.8750 4,404
15.9000 16.0000 14.6750 15.5000 11,316
17.4750 17.4750 16.0000 16.3750 9,252
Weekend
Weekend
16.2500 17.4500 16.2500 17.3000 12,600
16.9750 16.9750 15.5000 16.1750 15,920
49 · 10-K After-hours · 16:06 ET ANNUAL REPORT ↗
17.5000 17.7500 15.7500 16.5750 13,780
17.7250 18.0000 17.0000 17.3750 12,472
20.7500 21.1500 16.2500 18.1250 35,640
Weekend
Weekend
25.7500 27.0000 21.0000 21.6250 36,048
28.5000 32.5000 25.7500 26.2500 54,032
31.2500 33.2500 25.7500 30.5000 74,928
36.2500 36.5000 25.0000 31.2500 350,064
48.0000 56.2500 43.0000 46.2500 9,638,496
48 · 8-K Pre-market · 06:06 ET CURRENT REPORT ↗
Weekend
Weekend
No trading
14.7250 22.5000 14.2500 18.9500 452,540
13.4500 14.4750 13.4000 14.4750 3,260
13.0000 13.2500 12.2500 12.6750 2,940
12.1500 13.8500 10.9500 13.1000 3,044
Weekend
Weekend
13.1500 13.3750 10.9500 11.8750 3,540
47 · 8-K After-hours · 16:05 ET CURRENT REPORT ↗
12.9750 13.2500 12.7500 13.2500 1,060
13.4500 13.4500 12.7500 13.4000 912
13.3750 13.3750 12.5000 13.3000 1,576
13.1750 13.3750 11.8250 13.3750 2,456
Weekend
Weekend
12.5000 13.5000 12.1750 13.1750 5,964
19.0000 19.0000 10.2500 12.7500 12,384
21.2750 21.7500 17.0000 19.0000 6,272
22.1250 23.2500 20.7500 20.7500 4,256
22.5000 22.5000 20.5250 21.9750 6,220
Weekend
Weekend
21.2500 23.4750 20.5000 22.9250 9,128
46 · 8-K Next filing day · accepted 12 Mar, 21:29 ET CURRENT REPORT ↗
22.8500 23.5000 22.1500 23.5000 2,016
21.5000 23.5000 21.2500 23.2000 3,516
22.5750 22.7500 20.5000 21.5000 3,508
22.5000 22.7000 21.2500 22.3250 2,100
Weekend
Weekend
23.9000 23.9000 21.4750 22.2500 5,148
24.5000 25.7500 24.2500 25.2500 4,944
24.2750 25.7500 23.7250 24.9750 6,260
23.0750 26.0000 22.2000 24.5000 8,624
21.7500 24.5500 21.2250 24.4250 20,436
Weekend
Weekend
31.0000 31.0500 25.7500 26.0000 43,328
33.7500 33.7500 26.5000 30.5000 498,220
30.2500 33.7500 29.0250 31.5000 5,228
33.2500 33.7500 29.2500 30.0000 5,572
35.7500 36.0000 28.0000 33.5000 5,768
Weekend
Weekend
41.7500 44.5000 34.2500 36.0000 9,084
44.2500 44.2500 37.5000 42.2500 28,192
46.5000 47.0000 42.7500 44.2500 5,996
45 · 424B3 After-hours · 17:05 ET PROSPECTUS SUPPLEMENT ↗
48.5000 49.0000 45.0000 47.0000 3,768
44 · S-1/A Pre-market · 08:50 ET AMENDMENT NO. 1 TO FORM S-1 ↗
No trading
Weekend
Weekend
43 · 8-K After-hours · 16:41 ET CURRENT REPORT ↗ 42 · S-1/A After-hours · 16:28 ET AMENDMENT NO. 1 TO FORM S-1 ↗ 41 · S-1 After market open · 12:49 ET REGISTRATION STATEMENT ↗
69.0000 72.5000 47.0000 50.2500 22,644
70.7500 77.0000 70.0000 75.5000 19,356
75.2500 80.5000 71.2500 73.5000 9,548
40 · 424B3 After market open · 14:08 ET PROSPECTUS SUPPLEMENT ↗ 39 · 424B3 After market open · 14:08 ET PROSPECTUS SUPPLEMENT ↗ 38 · 424B3 After market open · 14:07 ET PROSPECTUS SUPPLEMENT ↗
80.2500 80.7250 72.5000 75.0000 14,480
103.5000 105.3750 72.5000 79.0000 18,756
Weekend
Weekend
97.5000 112.5000 97.5000 108.7500 2,963
112.5000 121.8750 97.5000 103.1250 8,065
37 · 8-K Pre-market · 08:00 ET CURRENT REPORT ↗
176.2500 176.2500 150.0000 161.2500 2,740
36 · S-1 Next filing day · accepted 03 Feb, 20:06 ET REGISTRATION STATEMENT ↗
150.0000 178.1250 150.0000 172.5000 1,719
35 · 8-K After-hours · 16:30 ET CURRENT REPORT ↗
183.7500 183.7500 165.0000 166.8750 1,975
Weekend
Weekend
181.8750 183.7500 168.7500 174.3750 1,559
178.1250 181.8750 153.7500 174.3750 6,069
196.8750 198.7500 180.0000 180.0000 1,986
195.0000 200.6250 180.0000 195.0000 2,721
204.3750 206.2500 174.3750 183.7500 3,318
Weekend
Weekend
213.7500 226.8750 193.1250 213.7500 3,646
211.8750 215.6250 193.1250 215.6250 4,820
178.1250 226.8750 174.3750 215.6250 11,406
178.1250 189.3750 170.6250 178.1250 4,074
No trading
Weekend
Weekend
243.7500 245.6250 166.8750 193.1250 80,521
166.8750 191.2500 165.0000 185.6250 4,953
168.7500 191.2500 153.7500 168.7500 17,020
172.5000 172.5000 150.0000 153.7500 3,479
172.5000 174.3750 161.2500 166.8750 2,316
Weekend
Weekend
187.5000 193.1250 168.7500 176.2500 3,519
185.6250 189.3750 174.3750 183.7500 2,224
168.7500 204.3750 168.7500 183.7500 5,818
151.8750 200.6250 151.8750 189.3750 14,570
185.6250 185.6250 153.7500 159.3750 9,280
Weekend
Weekend
189.3750 189.3750 161.2500 187.5000 11,152
34 · DEF 14A Pre-market · 06:09 ET PROXY STATEMENT ↗
No trading
210.0000 221.2500 170.6250 196.8750 30,522
251.2500 318.7500 202.5000 228.7500 444,275
33 · 8-K Pre-market · 07:31 ET CURRENT REPORT ↗
135.0000 135.0000 121.8750 127.5000 4,195
Weekend
Weekend
142.5000 150.0000 135.0000 135.0000 2,894
No trading
140.6250 161.2500 138.7500 150.0000 3,064
32 · 424B3 After market open · 09:43 ET PROSPECTUS SUPPLEMENT ↗
148.1250 159.3750 136.8750 144.3750 6,596
31 · 8-K Pre-market · 06:05 ET CURRENT REPORT ↗
200.6250 202.5000 153.7500 163.1250 10,059
30 · PRE 14A Next filing day · accepted 19 Dec, 18:37 ET PRELIMINARY PROXY STATEMENT ↗
Weekend
Weekend
210.0000 223.1250 198.7500 221.2500 1,866
198.7500 219.3750 198.7500 211.8750 2,781
200.6250 210.0000 191.2500 200.6250 4,130
200.6250 228.7500 178.1250 210.0000 5,449
294.3750 296.2500 221.2500 228.7500 16,253
Weekend
Weekend
318.7500 326.2500 283.1250 286.8750 5,079
337.5000 356.2500 330.0000 330.0000 3,407
335.6250 348.7500 322.5000 328.1250 3,373
371.2500 376.8750 330.0000 346.8750 7,093
318.7500 375.0000 300.0000 371.2500 9,692
Weekend
Weekend
324.3750 343.1250 324.3750 331.8750 3,275
350.6250 378.7500 326.2500 341.2500 16,334
331.8750 363.7500 305.6250 356.2500 8,592
307.5000 330.0000 292.5000 328.1250 4,831
328.1250 328.1250 288.7500 298.1250 3,427
Weekend
Weekend
298.1250 331.8750 281.2500 316.8750 2,856
No trading
277.5000 328.1250 277.5000 300.0000 5,296
285.0000 298.1250 271.8750 285.0000 2,168
268.1250 292.5000 255.0000 281.2500 6,615
Weekend
Weekend
255.0000 271.8750 245.6250 258.7500 1,264
292.5000 300.0000 247.5000 255.0000 3,894
29 · 8-K Next filing day · accepted 19 Nov, 18:02 ET CURRENT REPORT ↗ 28 · 10-Q After-hours · 17:19 ET QUARTERLY REPORT ↗
337.5000 343.1250 315.0000 316.8750 1,286
322.5000 352.5000 311.2500 337.5000 878
360.0000 367.5000 311.2500 328.1250 1,549
Weekend
Weekend
358.1250 384.3750 352.5000 363.7500 3,269
373.1250 378.7500 350.6250 365.6250 3,302
350.6250 399.3750 345.0000 380.6250 5,563
352.5000 358.1250 339.3750 348.7500 1,673
348.7500 375.0000 346.8750 352.5000 1,437
Weekend
Weekend
343.1250 356.2500 324.3750 341.2500 1,419
363.7500 365.6250 330.0000 350.6250 2,398
425.6250 431.2500 346.8750 352.5000 7,731
367.5000 414.3750 356.2500 386.2500 8,412
418.1250 431.2500 217.5000 356.2500 4,289
27 · 8-K Next filing day · accepted 31 Oct, 19:52 ET CURRENT REPORT ↗
Weekend
Weekend
483.7500 491.2500 408.7500 448.1250 5,530
517.5000 543.7500 461.2500 483.7500 19,414
26 · 8-K Pre-market · 07:40 ET CURRENT REPORT ↗
712.5000 750.0000 511.8750 536.2500 90,742
25 · 424B3 Next filing day · accepted 28 Oct, 17:35 ET PROSPECTUS ↗
543.7500 588.7500 534.3750 543.7500 7,807
553.1250 568.1250 525.0000 555.0000 1,019
Weekend
Weekend
510.0000 573.7500 510.0000 543.7500 2,487
523.1250 534.3750 508.1250 511.8750 1,156
560.6250 562.5000 487.5000 525.0000 2,015
603.7500 603.7500 566.2500 571.8750 2,703
24 · 8-K Next filing day · accepted 20 Oct, 20:32 ET CURRENT REPORT ↗ 23 · 8-K Next filing day · accepted 20 Oct, 17:51 ET CURRENT REPORT ↗
590.6250 618.7500 549.3750 603.7500 873
Weekend
Weekend
543.7500 575.6250 526.8750 556.8750 772
579.3750 601.8750 543.7500 577.5000 1,052
600.0000 750.0000 571.8750 579.3750 4,539
583.1250 594.3750 543.7500 575.6250 561
656.2500 656.2500 590.6250 601.8750 532
Weekend
Weekend
646.8750 656.2500 590.6250 615.0000 660
22 · S-1 After-hours · 17:20 ET REGISTRATION STATEMENT ↗
731.2500 731.2500 628.1250 633.7500 918
618.7500 720.0000 618.7500 706.8750 1,598
21 · 8-K Next filing day · accepted 07 Oct, 18:13 ET CURRENT REPORT ↗ 20 · DEFA14A After-hours · 16:30 ET DEFINITIVE ADDITIONAL MATERIALS ↗
665.6250 699.3750 611.2500 628.1250 1,746
620.6250 667.5000 620.6250 660.0000 688
Weekend
Weekend
618.7500 622.5000 564.3750 620.6250 1,040
598.1250 618.7500 579.3750 611.2500 496
562.5000 613.1250 562.5000 577.5000 1,185
551.2500 556.8750 541.8750 556.8750 296
562.5000 568.1250 543.7500 551.2500 456
Weekend
Weekend
19 · 424B3 After-hours · 16:53 ET PROSPECTUS ↗
570.0000 581.2500 543.7500 575.6250 414
590.6250 590.6250 558.7500 566.2500 293
613.1250 618.7500 583.1250 583.1250 395
18 · DEF 14A After market open · 11:21 ET DEFINITIVE PROXY STATEMENT ↗
611.2500 628.1250 609.3750 616.8750 269
611.2500 637.5000 596.2500 611.2500 506
Weekend
Weekend
661.8750 675.0000 605.6250 624.3750 830
628.1250 637.5000 611.2500 637.5000 527
637.5000 645.0000 579.3750 605.6250 1,024
17 · S-1/A Next filing day · accepted 16 Sep, 21:29 ET REGISTRATION STATEMENT ↗ 16 · 8-K After-hours · 17:20 ET CURRENT REPORT ↗
712.5000 731.2500 639.3750 648.7500 1,020
766.8750 810.0000 703.1250 703.1250 1,882
Weekend
Weekend
787.5000 855.0000 675.0000 738.7500 4,244
1023.7500 1125.0000 755.6250 864.3750 148,998
15 · PRE 14A After market open · 10:02 ET PROXY STATEMENT ↗
581.2500 598.1250 496.8750 496.8750 662
525.0000 624.3750 525.0000 590.6250 605
598.1250 598.1250 526.8750 540.0000 581
Weekend
Weekend
601.8750 618.7500 566.2500 573.7500 349
14 · 8-K After-hours · 17:28 ET CURRENT REPORT ↗
667.5000 667.5000 583.1250 620.6250 465
712.5000 748.1250 673.1250 673.1250 309
757.5000 768.7500 695.6250 708.7500 526
No trading
Weekend
Weekend
13 · S-1 After-hours · 17:09 ET REGISTRATION STATEMENT ↗
759.3750 806.2500 750.0000 768.7500 362
740.6250 806.2500 720.0000 768.7500 876
900.0000 900.0000 744.3750 766.8750 2,117
1248.7500 1297.5000 744.3750 806.2500 53,334
12 · 8-K Next filing day · accepted 25 Aug, 20:13 ET CURRENT REPORT ↗ 11 · 424B3 After-hours · 16:48 ET PROSPECTUS ↗
915.0000 933.7500 881.2500 918.7500 8,299
Weekend
Weekend
10 · S-1/A After market open · 14:48 ET REGISTRATION STATEMENT ↗
881.2500 993.7500 881.2500 937.5000 332
9 · S-1/A After-hours · 16:45 ET REGISTRATION STATEMENT ↗
973.1250 975.0000 868.1250 873.7500 256
969.3750 1012.5000 900.0000 971.2500 156
8 · 8-K After-hours · 16:43 ET CURRENT REPORT ↗
1012.5000 1050.0000 941.2500 971.2500 185
7 · DEF 14A After market open · 13:49 ET PROXY STATEMENT ↗
982.5000 1078.1250 965.6250 1055.6250 397
Weekend
Weekend
1068.7500 1068.7500 900.0000 935.6250 161
6 · 8-K/A Next filing day · accepted 14 Aug, 17:33 ET AMENDMENT NO. 1 TO FORM 8-K ↗ 5 · 10-Q After-hours · 17:29 ET QUARTERLY REPORT ↗
1003.1250 1031.2500 956.2500 1018.1250 227
1014.3750 1186.8750 922.5000 1050.0000 994
946.8750 973.1250 881.2500 918.7500 232
937.5000 1098.7500 886.8750 937.5000 1,146
4 · S-1 Next filing day · accepted 08 Aug, 21:43 ET REGISTRATION STATEMENT ↗ 3 · PRE 14A Next filing day · accepted 08 Aug, 17:56 ET PROXY STATEMENT ↗
Weekend
Weekend
937.5000 1006.8750 864.3750 873.7500 355
2 · 8-K After-hours · 16:05 ET CURRENT REPORT ↗
900.0000 915.0000 855.0000 881.2500 182
963.7500 984.3750 868.1250 916.8750 353
1098.7500 1143.7500 965.6250 993.7500 375
1087.5000 1149.3750 1018.1250 1115.6250 295
Weekend
Weekend
1220.6250 1222.5000 956.2500 1100.6250 966
1406.2500 1425.0000 1288.1250 1312.5000 756
1479.3750 1528.1250 1323.7500 1350.0000 1,460
2100.0000 2268.7500 1631.2500 1642.5000 4,455
1398.7500 4162.5000 1256.2500 3637.5000 68,251
1 · 8-K Pre-market · 06:13 ET CURRENT REPORT ↗
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.