Insider · SEC Form 4 · Director
Robert Chess
Filed with the SEC as CHESS ROBERT; the order above is the one the filer's own signature uses.
In the 12 months to Nov 8, 2026, on the open market: sold $2.0M of TWST. Filed 2 business days after the trade.
Open-market purchases and sales this filer reported on SEC Form 4, by the day traded. Insiders have two business days to file. A sale marked 10b5-1 was made under a plan adopted in advance. How to read these
- TWSTSold: Twist Bioscience Corp $2.0M
Source: SEC Form 4 filings. Value is shares × the price reported on the filing; a filing whose price failed Lytir's check against the market price is left out, and a trade that related owners reported on separate forms is counted once. Filings can be late, amended or wrong at the source; see methodology.
Other Form 4 entries
Not counted above: entries this filer reported on Form 4 in the same 12 months that are not open-market purchases or sales. Each entry is one line of a filing.
- NKTR: grant or award (code A), 1 entry, Sep 23, 2026
- TWST: option exercise or conversion (code M), 1 entry, Aug 7, 2026
- Code A
- A grant or award from the company, such as stock given as pay.
- Code M
- An exercise or conversion of a derivative security received from the company, such as stock options.
Source: the same SEC Form 4 filings. The codes are the SEC's own transaction codes; the meanings above are a plain-words reading of the SEC's Form 4 instructions.