Company · WTFC · CIK 1015328

Wintrust Financial Corp (WTFC) SEC filings and CIK.

WTFC’s SEC Central Index Key (CIK) is 0001015328, or 1015328 without leading zeros. The SEC’s ticker file lists it as WINTRUST FINANCIAL CORP. The same CIK also trades as WTFCN.

Ticker: WTFC
CIK: 0001015328
Other tickers: WTFCN
Insider transactions, Q3 2026: 26

Insider trading

In Q3 2026, insiders at Wintrust Financial Corp reported 26 non-derivative transactions on 26 Forms 3, 4 and 5, including 0 open-market purchases and 1 sales. See every WTFC 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 WTFC SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=1015328&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/1015328" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/1015328?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Wintrust Financial Corp on SEC.gov

Questions

What is WTFC’s CIK number?

WTFC’s SEC Central Index Key (CIK) is 0001015328, or 1015328 without leading zeros. The SEC’s ticker file lists it as WINTRUST FINANCIAL CORP. The same CIK also trades as WTFCN.

How do I find Wintrust Financial Corp’s 10-K?

Request /api/v1/filings?cik=1015328&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/wtfc.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.