Published
September 9, 2026
Investors who bought or otherwise acquired Twist Bioscience common stock between December 20, 2018 and November 15, 2022, or in the company's December 2020 stock offering, may qualify to claim an estimated $0.31 per share from the $17.05 million Twist Bioscience securities class action settlement. Claims close November 17, 2026, and brokerage records documenting every transaction are required.
Current Status
Claims are open. A Proof of Claim must be submitted online, or postmarked if mailed, no later than November 17, 2026; the notice states the date without a timezone, so treat the date itself as the cutoff. The court has conditionally certified a settlement class and authorized notice, and the deadline to exclude yourself or to object is October 7, 2026. A final approval hearing is scheduled for November 18, 2026 at 10:00 a.m. before the U.S. District Court for the Northern District of California in San Jose — one day after the claim deadline. No final approval order has been entered, and no payment date has been announced. Payments follow only after the court approves the settlement and the plan of allocation, after any appeals are resolved, and after every claim has been processed.
Status
Claims Open
Claim Deadline
November 17, 2026
Submitted online or postmarked by this date · no timezone specified in the notice · exclusions and objections are due October 7, 2026
Estimated Payout
$0.31 per share
Estimated average recovery before court-approved fees and expenses, which the notice estimates at about $0.09 per share · pro rata by recognized loss · $17,050,000 fund
Proof Required
Yes
Broker confirmation slips or account statements documenting your December 20, 2018 holdings, every class-period purchase and sale, and your November 15, 2022 and February 10, 2023 holdings
What Is the Case About?
Twist Bioscience makes synthetic DNA on a silicon-based platform and sells it to diagnostics companies, hospitals, drug developers and academic labs. Its stock trades on the Nasdaq under the ticker TWST. Through the period covered by this case the company told investors its chip-based writing technology produced DNA at far higher volume and far lower cost than conventional methods, reported rising gross margins, and described a new Oregon manufacturing plant it called a factory of the future.The lawsuit alleges that statements about Twist's production process, product quality and accounting were materially false or misleading. According to the complaint, the allegedly corrective information reached the market on November 15, 2022, when a short-seller published a report questioning the technology, the company's margins and how it classified certain manufacturing costs. Twist's stock closed at $30.43 that day, down $7.57, or roughly 20%, from $38.00 the day before. The claims are brought under Sections 11 and 15 of the Securities Act of 1933, which target misstatements in offering documents, and Sections 10(b) and 20(a) of the Securities Exchange Act of 1934.
The defendants — Twist Bioscience Corporation and two of its officers — deny all of it. They deny making any materially false or misleading statement or actionable omission, deny any act or omission giving rise to liability, and deny that the class suffered any loss attributable to their conduct. The settlement is expressly not an admission of wrongdoing, and no court has found any of the allegations true. In September 2025 the court granted in part and denied in part the defendants' motion to dismiss, allowing certain claims to proceed against certain defendants; that ruling decided which allegations could be litigated, not whether they were correct.
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Who Qualifies?
The conditionally certified settlement class is all persons who purchased or otherwise acquired Twist common stock in the December 2020 offering pursuant to the 2020 registration statement and were damaged, and/or between December 20, 2018 and November 15, 2022, both dates inclusive, and were damaged.The December 2020 offering is a specific event: Twist completed a secondary offering on December 2, 2020 in which it sold 3,136,362 shares at $110.00 per share, including 409,090 shares sold when the underwriters exercised their option in full. Shares bought in that offering are eligible under both the Securities Act and the Exchange Act calculations described below; shares bought on the open market during the class period run through the Exchange Act calculation only.
Excluded from the class are the defendants and their affiliates and subsidiaries; Twist's present and former officers and directors and their immediate family members; the defendants' liability insurance carriers and their affiliates; any entity in which a defendant had a controlling interest; Twist's employee retirement and benefit plans; and the legal representatives, heirs, estates, agents, successors and assigns of anyone in those categories. Anyone who validly excludes themselves by October 7, 2026 is also out.
How Much Can You Get?
The fund is $17,050,000 in cash. Based on the lead plaintiff's expert's estimate of the number of damaged shares, the notice puts the estimated average recovery at approximately $0.31 per share before court-approved fees, expenses and costs. That is an estimate built on the assumption that claims are filed on 100% of eligible shares, and it is not a promise — an actual payment is a pro rata share of the net fund equal to your Recognized Claim divided by the total of all allowed Recognized Claims.Deductions come out of the fund first: taxes and tax expenses, the costs of notice and claims administration, any award to the lead plaintiff, and court-approved attorneys' fees and expenses. Lead counsel will ask for fees of no more than 25% of the settlement amount, or $4,262,500, plus expenses not to exceed approximately $850,000, and the lead plaintiff may request up to $10,000 for its work representing the class. If the court awards the full request and claims come in on all eligible shares, the notice estimates fees and expenses at about $0.09 per share. Class members owe nothing personally.
The plan of allocation runs each qualifying share through two calculations and credits whichever produces the larger figure. The Exchange Act calculation turns on November 15, 2022 and a per-share inflation figure of $8.11. Shares bought during the class period and sold before November 15, 2022 have a Recognized Loss Amount of $0. Shares sold between November 15, 2022 and the close on February 10, 2023 are credited with the least of $8.11, the purchase price minus the sale price, or the purchase price minus the average closing price between November 15, 2022 and the sale date. Shares still held at the close on February 10, 2023 are credited with the lesser of $8.11 or the purchase price minus $25.98, the mean closing price over the statutory 90-day look-back period.
The Securities Act calculation applies only to shares bought in the December 2020 offering and anchors on the $110.00 offering price. It uses a 0.17 multiplier on the loss for shares sold before November 15, 2022, and for later sales and shares still held it builds off the same $8.11 figure with a 10% factor, capping at $16.37 per share for shares held at the close on August 7, 2026. Those amounts also get an uplift of $0.81 per share to reflect that a Securities Act claim does not require proving intent.
Two mechanics catch people out. Transactions are matched First-In, First-Out, and recognized loss is zero on a short sale and on the portion of a transaction that covers one. And if your calculated distribution comes to less than $10.00, no payment is issued; those funds go to claimants receiving $10.00 or more.
What Proof Is Required?
Documentation is required for every transaction and holding you report — broker confirmation slips, brokerage account statements, or equivalent documents adequately evidencing the dates, prices and share counts. The notice is explicit that the parties have no information about your transactions in Twist common stock, so a claim submitted without records can be delayed or rejected outright.The claim form asks for four things: the shares you held at the opening of trading on December 20, 2018; every purchase or acquisition from December 20, 2018 through November 15, 2022, with a checkbox marking shares bought in the December 2020 offering; every sale in that period; and your holdings at the close on November 15, 2022 and at the close on February 10, 2023. List transactions separately and in chronological order by trade date, and use the contract or trade date rather than the settlement date. Covering a short sale counts as a purchase on the covering date.
File one claim form per separate legal entity, combining all of that entity's accounts on a single form — an individual's IRA transactions are a separate entity from transactions in that person's own name, while a corporation with several brokerage accounts files one form covering all of them. Claimants with a large number of transactions can request the required electronic file layout from the claims administrator through the official settlement website; an electronic submission still needs a signed Proof of Claim, and is not treated as filed until the administrator issues a written acknowledgment. Executors, trustees, guardians and other legal representatives must sign on behalf of the person they represent and attach proof of their authority. A claim is not considered filed until you receive an acknowledgment, which the administrator sends within 60 days.
Can You Opt Out or Object?
Both, and both are due October 7, 2026. An exclusion request must be submitted online or by mail — not by telephone or email — and must give the name, address and telephone number of the person or entity seeking exclusion, state that you want to be excluded from the settlement class in this case, include documentation evidencing the dates, prices and share counts of all class-period purchases and sales, and be signed by you or an authorized representative. Excluding yourself means no payment from the fund; it is also the only route that preserves an individual lawsuit, and the notice warns that such a claim may be time-barred and that pursuing one can expose you to discovery.An objection stays inside the class. It must be mailed or delivered so that the court receives it — not merely postmarks it — by October 7, 2026, and must give your name, address and telephone number, document your class membership with the share counts, dates and prices of your class-period transactions, and state your reasons and whether they apply to you alone, to a subset of the class, or to the whole class. A pre-formatted objection form is available on the official settlement website. Say in the objection if you also want to speak at the hearing. Do not file both an exclusion request and a claim or objection: if you do, the claim or objection is disregarded and you are treated as excluded.
What Is the Deadline?
The Proof of Claim and its supporting documentation must be submitted online, or postmarked if mailed, no later than November 17, 2026. The notice gives the date without a timezone. Exclusion requests and objections are due earlier, on October 7, 2026. A class member who misses the claim deadline gets no payment but remains bound by the judgment and the releases in it, whether or not a claim was ever filed.How Do You Take Action?
File through the official settlement website, Twist Securities Settlement.com, which hosts the online claim portal, the downloadable Proof of Claim, the long-form notice with the full plan of allocation, the objection and exclusion forms, and a pre-formatted spreadsheet template for listing transactions.Pull your brokerage records covering December 20, 2018 through February 10, 2023 before you start, because the form asks for holdings at three separate dates as well as every transaction in between. Attach copies rather than originals, do not highlight anything, and keep a copy of what you file. If you are not a U.S. person as defined in the claim form's tax certification section, the administrator also requires a completed IRS Form W-8BEN, W-8BEN-E or another form in the W-8 series, available from the IRS at irs.gov. Questions about how a settlement payment should be reported on your own return are for the IRS or a qualified tax professional, not for this page.
What Happens Next?
The next milestone is the final approval hearing on November 18, 2026 at 10:00 a.m. in Courtroom 7 on the 4th floor of the Robert F. Peckham Federal Building and United States Courthouse in San Jose. The court will consider whether the settlement is fair, reasonable and adequate, weigh any objections, hear from class members who asked to speak, and rule on the plan of allocation and on lead counsel's fee and expense application. Class members do not need to attend, and the date, time or format can change without further written notice — the official settlement website posts any change, and the papers supporting approval are due to be filed and posted at least 35 days before the hearing.If the court approves the settlement, distribution still waits on any appeals and on the processing of every claim. No payment date has been announced.
Sources and Verification
• Official Settlement Website — Twist Securities Settlement• Long-Form Notice of Pendency and Proposed Settlement of Class Action, filed as an exhibit to the Stipulation of Settlement, including the Plan of Allocation and the 90-day look-back table
• Proof of Claim and Release form and its filing instructions, and the settlement website's frequently asked questions
• Class Action Complaint for Violations of the Federal Securities Laws, filed December 12, 2022
• Peters v. Twist Bioscience Corp., et al., Case No. 5:22-cv-08168-EKL, U.S. District Court for the Northern District of California, San Jose Division
One inconsistency worth flagging for anyone comparing documents: the notice materials give two different dates — March 31, 2026 and April 30, 2026 — for the mediation session at which the mediator proposed the $17.05 million figure, and one page of the settlement website names the wrong federal district. The case number, the court, the fund and every deadline above are consistent across the court-filed notice, the claim form and the settlement website.
OpenClassActions.com is a consumer news site and is not the claims administrator or a law firm.
Questions
I sold my Twist Bioscience stock before November 15, 2022. Do I recover anything?
Under the Exchange Act calculation, no. Shares bought during the class period and sold before November 15, 2022 carry a Recognized Loss Amount of $0, because the alleged corrective information did not reach the market until that day. There is one exception: shares bought in the December 2020 offering at $110.00 per share are also run through a separate Securities Act calculation that can produce a recovery even on a pre-November 15, 2022 sale, and each qualifying share is credited with whichever of the two amounts is greater.
How much will a Twist Bioscience claim actually pay?
The notice estimates an average recovery of about $0.31 per damaged share before court-approved fees, expenses and costs, and estimates fees and expenses at roughly $0.09 per share if the court awards what lead counsel requests. Both figures are estimates that assume claims are filed on 100% of eligible shares. The actual payment is a pro rata share of the net fund based on your Recognized Claim relative to every other allowed claim, and no check is issued if the calculated distribution comes to less than $10.00.
What documentation does the Twist Bioscience claim form require?
Copies of broker confirmation slips, brokerage account statements, or equivalent documentation evidencing every transaction and holding you report — your holdings at the opening of trading on December 20, 2018, every purchase and sale during the class period, your holdings at the close on November 15, 2022, and your holdings at the close on February 10, 2023. Neither the parties nor the claims administrator has any record of your trades, so a claim without documentation can be delayed or rejected.
Can I exclude myself from the Twist Bioscience settlement?
Yes. A written exclusion request must reach the claims administrator, online or by mail, no later than October 7, 2026, and must give your name and contact information, state that you want to be excluded from the settlement class, include documentation of the dates, prices and share counts of your class-period purchases and sales, and be signed. Excluding yourself means giving up any payment from the fund. Do not submit both an exclusion request and a claim form — if you do, the claim is disregarded and you are treated as excluded.
When will Twist Bioscience settlement payments go out?
No payment date has been announced. The court is scheduled to decide whether to approve the settlement at a final approval hearing on November 18, 2026. Distribution follows only after approval, after any appeals are resolved, and after every claim has been processed, which the notice says takes time.
Are Twist Bioscience options or short sales eligible?
Common stock is the eligible security. Shares bought or sold by exercising an option do count, using the exercise date as the transaction date and the exercise price as the transaction price. Recognized loss is zero on a short sale and on the portion of a transaction that covers one. Transactions are matched First-In, First-Out, and use the trade date rather than the settlement date.
Related Securities Settlements
The nearest open comparison is the $125M Zymergen IPO settlement, another synthetic-biology case built on offering-document claims. Investors tracking deadlines in the same window can also check the $19.5M Kornit Digital settlement and the $175M Seagate settlement. Every case we track, open and expired, is listed on the securities class actions hub.Official Settlement Notice
For more class actions keep scrolling below.
Settlement Amount
$17,050,000
Case Title
Peters v. Twist Bioscience Corp., et al.
Case Number
5:22-cv-08168-EKL
Court
U.S. District Court, Northern District of California
Final Approval Hearing
November 18, 2026 at 10:00 AM
San Jose Division, Courtroom 7 · date and time subject to change
Administrator
Simpluris, Inc.
Official Website
Twist Securities Settlement.com
