Insider · SEC Form 4 · Chairman & CEO
David Goeckeler
Filed with the SEC as Goeckeler David; 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 $105.0M of SNDK. Filed a median of 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
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.
- SNDK: shares withheld for tax or exercise price (code F), 4 entries, Aug 20 to Sep 3, 2026
- SNDK: grant or award (code A), 1 entry, Sep 17, 2026
- Code A
- A grant or award from the company, such as stock given as pay.
- Code F
- Shares paid to, or withheld by, the company to cover an exercise price or the tax due on an award.
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.