Profusa, Inc. PFSA (last ticker on record)

CIK 1859807Its SEC filings (opens in a new tab)

Delisting notice (not a red flag)
95% wipeout

These figures describe clients, not conduct. A lawyer or firm can serve many companies that later had trouble for reasons that have nothing to do with their work, and nothing here says any lawyer or firm did anything wrong.

Red flags: 1; Newest began Dec 2025
Largest fall in its shares: 99%; Jul 2025 to Nov 2026
Law firms: 5; Linked to 5 or more companies
Lawyers: 9; Linked to 5 or more companies

What happened

Aug 31, 2026Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Apr 29, 2026Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Mar 13, 2026Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Dec 22, 2025Shares down 95% from their high
Nov 3, 2025Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Sep 16, 2025Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Dec 26, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Dec 12, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Oct 21, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Oct 4, 2024Delisting notice (Item 3.01)Form 8-K/A (opens in a new tab)
Sep 13, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Jun 7, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Mar 8, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Jan 18, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
May 1, 2023Delisting notice (Item 3.01)Form 8-K/A (opens in a new tab)
Apr 26, 2023Delisting notice (Item 3.01)Form 8-K (opens in a new tab)

An SEC release can name a company’s officer, or its stock as what a scheme sold or moved, so the company may be the victim. Each link goes to what to read.

Law firms

The ratios are about all the companies linked to each one, this one included: how many had that outcome, as a multiple of what comparable companies show. 1.00 means no more than expected.

Law firms linked to this company
Name	First linked	How it is known	Linked companies	SEC/DOJ scrutiny	Went dark	95% wipeout
Sullivan & Worcester LLP	Jan 2026	Named in SEC correspondence	212	0.95	0.45	1.06
ArentFox Schiff LLP	Dec 2022	Named in SEC correspondence	62	0.72	0.00	1.13
Ellenoff Grossman & Schole LLP	Jun 2021	Named in a filing	963	0.96	1.12	1.21
Schiff Hardin	Jun 2021	Named in SEC correspondence	184	0.78	0.85	1.26
Brown Rudnick	May 2023	Text search only	137	0.84	0.90	0.97

Lawyers

The ratios are about all the companies linked to each one, this one included: how many had that outcome, as a multiple of what comparable companies show. 1.00 means no more than expected.

Lawyers linked to this company
Name	First linked	How it is known	Linked companies	SEC/DOJ scrutiny	Went dark	95% wipeout
Aaron M. SchleicherSullivan & Worcester LLP	Feb 2026	Named in SEC correspondence	22	1.60	0.00	1.25
David E. DanovitchSullivan & Worcester LLP	Jan 2026	Named in SEC correspondence	85	0.88	1.89	1.25
Joseph E. SegiliaSullivan & Worcester LLP	Jan 2026	Named in SEC correspondence	12	2.62	2.27	2.30
Michael DeDonatoSullivan & Worcester LLP	Jan 2026	Named in SEC correspondence	15	2.07	2.11	1.67
Marc E. RiveraArentFox Schiff LLP	Aug 2025	Named in SEC correspondence	18	0.00	0.00	0.46
Ralph De MartinoSchiff Hardin	Aug 2021	Named in SEC correspondence	16	0.78	0.00	1.66
Barry I. GrossmanEllenoff Grossman & Schole LLP	Jun 2021	Named in a filing	187	0.98	1.25	1.32
Benjamin S. ReichelEllenoff Grossman & Schole LLP	Jun 2021	Named in a filing	48	1.34	0.37	1.69
Ralph V. De MartinoArentFox Schiff LLP	Jun 2021	Named in SEC correspondence	78	0.51	1.20	1.38