Notice of Proposed Sale · 144
Twist Bioscience Corporation
TWSTNASDAQEQUITYCurrent
Notice of Proposed Sale
Structured filing — 144
primary_doc.xml
Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.
Proposed-sale notice
- Issuer
- Twist Bioscience Corp
- Issuer CIK
- 0001581280
- SEC file number
- 001-38720
- Phone
- 800-719-0671
- Person for whose account securities are to be sold
- Cho Dennis
- Relationships to issuer
- Officer
- Street
- 681 GATEWAY BLVD.
- City
- SOUTH SAN FRANCISCO
- State / country code
- CA
- Postal code
- 94080
Securities proposed for sale
| Security | Proposed units | Aggregate market value | Units outstanding | Approximate sale date | Exchange | Broker / market maker |
|---|---|---|---|---|---|---|
| Common | 14,205 | 1,843,098.75 | 62,707,424 | 08/19/2026 | NASDAQ | Fidelity Brokerage Services LLC |
Broker / market maker — proposed row 1, entry 1
- Name
- Fidelity Brokerage Services LLC
- Street
- 900 Salem Street
- City
- Smithfield
- State / country code
- RI
- Postal code
- 02917
Acquisition of securities to be sold
| Security | Acquired | Nature of acquisition | Acquired from | Amount acquired | Gift transaction | Payment date | Nature of payment |
|---|---|---|---|---|---|---|---|
| Common | 10/01/2025 | Restricted Stock Vesting | Issuer | 11,910 | N | 10/01/2025 | Compensation |
| Common | 10/29/2025 | Restricted Stock Vesting | Issuer | 2,295 | N | 10/29/2025 | Compensation |
Sales reported in the preceding three months
| Seller | Security | Sale date | Amount sold | Gross proceeds |
|---|---|---|---|---|
| Dennis H. Cho | Common | 05/21/2026 | 1,642 | 87,447.34 |
| Dennis H. Cho | Common | 05/29/2026 | 14,205 | 990,798.75 |
| Dennis H. Cho | Common | 06/08/2026 | 402 | 28,077.37 |
| Dennis H. Cho | Common | 06/22/2026 | 346 | 30,213.55 |
| Dennis H. Cho | Common | 06/24/2026 | 14,205 | 1,274,898.75 |
| Dennis H. Cho | Common | 08/03/2026 | 1,070 | 91,293.68 |
| Dennis H. Cho | Common | 08/05/2026 | 14,205 | 1,558,998.75 |
Seller — prior-sale row 1, entry 1
- Name
- Dennis H. Cho
- Street
- 681 Gateway Blvd
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Seller — prior-sale row 2, entry 1
- Name
- Dennis H. Cho
- Street
- 681 Gateway Blvd
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Seller — prior-sale row 3, entry 1
- Name
- Dennis H. Cho
- Street
- 681 Gateway Blvd
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Seller — prior-sale row 4, entry 1
- Name
- Dennis H. Cho
- Street
- 681 Gateway Blvd
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Seller — prior-sale row 5, entry 1
- Name
- Dennis H. Cho
- Street
- 681 Gateway Blvd
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Seller — prior-sale row 6, entry 1
- Name
- Dennis H. Cho
- Street
- 681 Gateway Blvd
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Seller — prior-sale row 7, entry 1
- Name
- Dennis H. Cho
- Street
- 681 Gateway Blvd
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Prior-sale reporting
- Nothing to report for the preceding three months
- N
Notice signature
- Notice date
- 08/19/2026
- Signed
- /s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Dennis Cho
- Plan adoption dates
- 02/17/2026
Company context
At Twist Bioscience, our customizable solutions across the biological continuum raise the bar in diagnostics, therapeutics, industrial, agriculture and research markets. We drive innovation with confidence, without compromise. Whether delivering oligos, genes, proteins, libraries, characterization data, antibody discovery solutions, or NGS workflow tools, our scientific expertise and exceptional customer experience help navigate complex challenges, all with precision and at the scale and speed customers require. By enhancing R&D efficiency at every turn, we give scientists more shots on goal - more experiments, more iterations, more chances for remarkable discoveries.