F-1MEF registration statements under Rule 462(b)
F-1MEF: a Rule 462(b) registration that adds securities to an effective Form F-1, typically to upsize a foreign private issuer's US IPO at pricing.
curl -H "Authorization: Bearer $SECFEED_KEY" \ "https://secfeedapi.com/v1/filings?query=formType:%22F-1MEF%22&size=2"
import os, requests
r = requests.get(
"https://secfeedapi.com/v1/filings",
params={'query': 'formType:"F-1MEF"', 'size': '2'},
headers={"Authorization": f"Bearer {os.environ['SECFEED_KEY']}"},
)
print(r.json())What is F-1MEF?
F-1MEF is the Form F-1 version of the Rule 462(b) short form registration. Foreign private issuers use it to register up to 20 percent more securities when an IPO is upsized.
Pair it with the 424B4 final prospectus to see the final size and price.
Foreign private issuers with an effective Form F-1.
Before the additional securities are sold; effective on filing.
Filings per year
Every F-1MEF filing on EDGAR, counted from the SecFeed index. Updated daily.
What is inside
| Section | Contents |
|---|---|
| Reference to F-1 | Incorporated by reference. |
| Fee table | Fees for added securities. |
Get F-1MEF data with SecFeed
Search the filings with formType:"F-1MEF", read any document as text or PDF, and use these APIs for structured data:
IPO and follow-on registration statements and final prospectuses with offering terms: shares, price, proceeds, ticker, exchange and underwriters.
Filing Search APISearch every SEC EDGAR filing since 1993 with Lucene-style queries over ticker, CIK, form type, filing date, company, SIC and 8-K items.
Text Search APISearch every word of every EDGAR filing and exhibit since 2001. Exact phrases, form type, CIK and date filters, results as JSON.
Latest F-1MEF filings
| Company | Form | Filed | |
|---|---|---|---|
| DarkIris Inc. | F-1MEF | 2026-10-08 | EDGAR ↗ |
| Lianhe Sowell International Group Ltd | F-1MEF | 2026-09-03 | EDGAR ↗ |
| Londian Wason New Energy Tech Inc. | F-1MEF | 2026-08-11 | EDGAR ↗ |
| Rubico Inc. | F-1MEF | 2026-07-06 | EDGAR ↗ |
| Rubico Inc. | F-1MEF | 2026-07-06 | EDGAR ↗ |
| Micware Co., Ltd. | F-1MEF | 2026-05-13 | EDGAR ↗ |
| LIBERTY DEFENSE HOLDINGS, LTD. | F-1MEF | 2026-04-21 | EDGAR ↗ |
| Rubico Inc. | F-1MEF | 2026-04-09 | EDGAR ↗ |
Use cases
- Detect upsized foreign IPOs
- Compare initial and final IPO sizes
Related forms
Every Form F-1 since 1996: IPO and offering registrations by foreign private issuers listing shares or ADRs in the United States.
S-1MEFS-1 upsize (Rule 462(b))S-1MEF: a short registration statement filed under Rule 462(b) to add securities to an effective Form S-1, usually to upsize an IPO at pricing.
424B4Priced IPO prospectusEvery 424B4 final prospectus since 1994: the priced IPO and offering prospectus with shares sold, price per share, proceeds and underwriters.
FAQ
What is F-1MEF?
The Rule 462(b) short form for an effective Form F-1, used to add up to 20 percent more securities.
When is it filed?
Usually on the day an IPO is priced, if the deal is upsized.
Every F-1MEF filing, one API call away
500 free calls a month. JSON, CSV, PDF and a Python SDK.