If you purchased Masimo Corp. publicly traded common stock between May 4, 2022, and Aug. 8, 2023, you may qualify for a payment from a $33.75 million securities class action settlement.
The lawsuit alleged the company made misleading statements about its business and financial disclosures, which may have affected investors. Masimo denies wrongdoing but agreed to settle the case.
If you qualify, the key step is simple: submit a claim by April 28, 2026.
Why This Lawsuit Exists?
The lawsuit claimed that Masimo Corp. and certain executives made false or misleading statements about:
Its health care business
The acquisition and integration of Sound United
Related financial disclosures
According to the plaintiffs, these alleged misstatements artificially inflated Masimo’s stock price. When corrective information later entered the market, investors allegedly suffered losses.
Masimo denies all allegations of wrongdoing, but agreed to create a $33,750,000 settlement fund to resolve the claims and avoid further litigation.
Who Qualifies?
You may be eligible if:
You purchased or otherwise acquired Masimo’s publicly traded common stock
Between May 4, 2022, and Aug. 8, 2023 (inclusive)
And you allegedly suffered damages
Additional details:
Individuals and entities can qualify
The beneficial owner or their legal representative must file the claim
Joint owners must sign the claim form
Executors, trustees, guardians, or conservators may file for investors with proof of authority
How Much Money Could You Get?
The settlement creates a $33,750,000 fund to compensate eligible investors.
Your payment will depend on several factors, including:
How many shares did you purchase
When you bought and sold them
How many total valid claims are submitted
The total recognized losses of all claimants
Payments will be distributed pro rata (a proportional share of the settlement fund).
Key recognized-loss rules include:
Shares sold before July 18, 2023: Recognized loss = $0
Shares sold July 18–Aug. 8, 2023: Loss equals the lesser of the artificial inflation difference or the out-of-pocket loss
Shares sold Aug. 9–Nov. 6, 2023: Loss equals the least of three calculations based on inflation, average prices, or out-of-pocket loss
Shares held through Nov. 6, 2023: Loss equals the lesser of inflation at purchase or purchase price minus $95.50
Important notes:
If your calculated loss is negative, it will be set to $0
Claims with payments under $10 will not receive a payout
Final amounts depend on the total recognized losses of all claimants
Your Options
| Your Option | What It Means | Deadline |
|---|---|---|
| File a Claim | Submit a claim form to receive a share of the settlement if eligible. | April 28, 2026 |
| Exclude Yourself (Opt Out) | Remove yourself from the settlement and retain the right to sue separately. | April 14, 2026 |
| Object | Tell the court why you disagree with the settlement or attorneys’ fees. | April 14, 2026 |
| Attend the Hearing | Ask to speak at the settlement fairness hearing. | May 5, 2026 |
| Do Nothing | Receive no payment and still be bound by the settlement. | — |
The final approval hearing is scheduled for May 5, 2026.
How to File a Claim?
To submit a claim, you must provide detailed records of your Masimo stock transactions, including:
Shares held at the open of trading on May 4, 2022
Each purchase or acquisition during the class period
Each sale from May 4, 2022, through Nov. 6, 2023
Shares held at the close of trading on Nov. 6, 2023
You must also include documentation such as:
Broker confirmation slips
Brokerage account statements
Authorized broker statements showing transaction history
Additional requirements:
Provide the last four digits of your Social Security number or taxpayer identification number
Joint owners must sign the claim
Claims can be filed online or by mail.
Mailing address:
Masimo Securities Settlement
c/o A.B. Data Ltd.
P.O. Box 170600
Milwaukee, WI 53217
When Will Payments Be Sent?
Payments will be issued after the court grants final approval, all claims are processed, and any appeals are resolved. This process can take several months or longer.
