Company · AMPH · CIK 1297184

Amphastar Pharmaceuticals, Inc. (AMPH) SEC filings and CIK.

AMPH’s SEC Central Index Key (CIK) is 0001297184, or 1297184 without leading zeros. The SEC’s ticker file lists it as Amphastar Pharmaceuticals, Inc..

Ticker: AMPH
CIK: 0001297184
Other tickers: None
Insider transactions, Q3 2026: 8

Insider trading

In Q3 2026, insiders at Amphastar Pharmaceuticals, Inc. reported 8 non-derivative transactions on 7 Forms 3, 4 and 5, including 0 open-market purchases and 5 sales. See every AMPH insider transaction →

Recent filings we observed

No filings for this CIK appear in our current observation window. The full history is available from the filings endpoint below and on SEC.gov.

Get AMPH SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=1297184&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/1297184" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/1297184?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Amphastar Pharmaceuticals, Inc. on SEC.gov

Questions

What is AMPH’s CIK number?

AMPH’s SEC Central Index Key (CIK) is 0001297184, or 1297184 without leading zeros. The SEC’s ticker file lists it as Amphastar Pharmaceuticals, Inc..

How do I find Amphastar Pharmaceuticals, Inc.’s 10-K?

Request /api/v1/filings?cik=1297184&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.

Ticker and CIK: SEC company_tickers.json, cached 2026-11-02. Tickers can move between entities; the CIK identifies the filer.

Plain-text version for agents and LLMs: /companies/amph.md

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