LYTIR

Insider · SEC Form 4 · CFO, EVP & TREASURER

William J. Peters

Filed with the SEC as PETERS WILLIAM J; 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 $1.1M of AMPH. 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

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $1.1M in total.Aug: Insider sales $184KSep: Insider sales $103KNov: Insider sales $815KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $1.1M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.
  1. AMPHSold: Amphastar Pharmaceuticals, Inc. Nov 5, 2026 12,631 shares filed Nov 6, 2026 167,076 shares held directly after, as filed 10b5-1 plan filing $366K
  2. AMPHSold: Amphastar Pharmaceuticals, Inc. Nov 4, 2026 16,000 shares filed Nov 6, 2026 168,707 shares held directly after, as filed 10b5-1 plan filing $448K
  3. AMPHSold: Amphastar Pharmaceuticals, Inc. Sep 21, 2026 4,139 shares filed Sep 23, 2026 168,707 shares held directly after, as filed 10b5-1 plan filing $103K
  4. AMPHSold: Amphastar Pharmaceuticals, Inc. Aug 7, 2026 8,180 shares filed Aug 11, 2026 172,846 shares held directly after, as filed 10b5-1 plan filing $184K

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.

  • AMPH: option exercise or conversion (code M), 3 entries, Aug 7 to Nov 5, 2026
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.