Quanterix Corp QTRX (last ticker on record)

CIK 1503274Its SEC filings (opens in a new tab)

Restatement
Delisting notice (not a red flag)
Restructuring
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: 3; Newest began Sep 2025
Largest fall in its shares: 97%; Feb 2021 to Sep 2026
Law firms: 8; Linked to 5 or more companies
Lawyers: 12; Linked to 5 or more companies

What happened

Sep 3, 2025Shares down 95% from their high
Jul 24, 2025Exit or disposal costs (Item 2.05)Form 8-K (opens in a new tab)
Jul 18, 2025Exit or disposal costs (Item 2.05)Form 8-K (opens in a new tab)
May 12, 2025Exit or disposal costs (Item 2.05)Form 8-K (opens in a new tab)
Nov 22, 2024Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
Nov 12, 2024Said its accounts could not be relied on (Item 4.02)Form 8-K (opens in a new tab)
Aug 8, 2022Exit or disposal costs (Item 2.05)Form 8-K (opens in a new tab)
Aug 18, 2020Delisting 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
DLA Piper	Feb 2025	Named in SEC correspondence	1,184	1.00	0.45	1.20
Covington & Burling	Mar 2023	Named in SEC correspondence	447	1.07	0.27	0.99
Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.	Jul 2017	Named in SEC correspondence	567	0.92	0.60	1.20
Ropes & Gray	Jul 2017	Named in SEC correspondence	914	0.98	0.14	0.92
Sidley Austin	Apr 2025	Text search only	1,210	1.30	0.14	0.93
Cooley LLP	Jul 2017	Text search only	1,634	0.71	0.44	1.24
Goodwin Procter	Jul 2017	Text search only	1,221	0.79	0.31	1.17
Goulston & Storrs	Jul 2017	Text search only	86	0.90	0.34	1.33

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
Patrick J. O'MalleyDLA Piper	Mar 2025	Named in SEC correspondence	17	0.79	0.00	2.34
Catherine J. DarganCovington & Burling	Feb 2025	Named in SEC correspondence	20	0.00	0.00	0.35
Kerry S. BurkeCovington & Burling	Feb 2025	Named in SEC correspondence	22	1.90	0.00	1.10
Kyle RabeCovington & Burling	Feb 2025	Named in SEC correspondence	6	1.74	0.00	1.30
David H. EngvallCovington & Burling	Mar 2023	Named in a filing	16	1.93	0.00	1.60
Brian P. KeaneMintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.	Jul 2017	Named in SEC correspondence	18	0.00	0.00	1.32
John P. CondonMintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.	Jul 2017	Named in SEC correspondence	12	0.00	0.00	1.43
Megan N. GatesMintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.	Jul 2017	Named in SEC correspondence	43	0.60	0.56	1.46
William T. WhelanMintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.	Jul 2017	Named in SEC correspondence	19	0.46	0.00	0.97
Patrick J. O MalleyDLA Piper	Feb 2025	Text search only	11	1.94	0.00	4.16
Michael S. PiloFenwick & West LLP	Nov 2017	Text search only	26	0.00	0.00	0.60
Mitchell S. BloomGoodwin Procter	Jul 2017	Text search only	109	0.38	0.00	1.03