Glossary

73 abbreviations and codes used in the federal regulatory datasets. Each term has its own canonical page with schema.org/DefinedTerm markup.

SEC form types

3
Initial statement of beneficial ownership (insider).
4
Statement of changes in beneficial ownership (insider sales/buys).
5
Annual statement of changes in beneficial ownership.
144
Notice of proposed sale under Rule 144. Filed before an affiliate sells restricted or control stock — predictive insider-sale signal.
10-K
Annual report. Comprehensive overview of business + financials.
10-K/A
Amendment to a 10-K annual report.
10-Q
Quarterly report. Unaudited financials for one quarter.
10-Q/A
Amendment to a 10-Q quarterly report.
8-K
Current report. Material events (mergers, exec changes, earnings, etc.).
8-K/A
Amendment to an 8-K current report.
20-F
Annual report for foreign private issuers (NYSE/Nasdaq-listed non-US).
6-K
Foreign issuer's report of material information.
13F-HR
Quarterly holdings report by institutional investment managers (>$100M).
13F-NT
Notice that holdings were reported on a different 13F filing.
SCHEDULE 13D
Beneficial owner of >5%, with intent to influence/control. Activist filing.
SCHEDULE 13G
Beneficial owner of >5% with passive intent. Index funds etc.
DEF 14A
Definitive proxy statement. Includes exec comp, board votes, governance.
DEFA14A
Additional definitive proxy materials.
S-1
Registration statement for new public offerings (IPOs).
S-3
Simplified registration for seasoned issuers (secondary offerings).
424B2
Prospectus supplement for shelf offerings (filed under Rule 424(b)(2)).
NPORT-P
Monthly portfolio holdings report by registered investment companies.
144/A
Amendment to a Form 144 notice.

SEC 8-K item codes

Item 1.01
Entry into a Material Definitive Agreement — often M&A, financing, or partnership.
Item 1.02
Termination of a Material Definitive Agreement.
Item 2.01
Completion of Acquisition or Disposition of Assets.
Item 2.02
Results of Operations and Financial Condition (earnings release).
Item 2.05
Costs Associated with Exit or Disposal Activities (layoffs, restructuring).
Item 3.01
Notice of Delisting or Failure to Satisfy Listing Rule.
Item 3.02
Unregistered Sales of Equity Securities (private placement).
Item 4.01
Changes in Registrant's Certifying Accountant (auditor change).
Item 4.02
Non-Reliance on Previously-Issued Financial Statements (restatement — red flag).
Item 5.02
Departure/Election of Directors or Officers; Compensatory Arrangements (executive changes).
Item 5.07
Submission of Matters to a Vote of Security Holders (annual-meeting results).
Item 7.01
Regulation FD Disclosure (voluntary material information).
Item 8.01
Other Events — catch-all material disclosure.
Item 9.01
Financial Statements and Exhibits.

SEC insider transaction codes

P
Open-market or private purchase (insider buy).
S
Open-market or private sale (insider sell).
A
Grant, award, or other acquisition (e.g., RSU vesting).
M
Exercise/conversion of derivative security (option exercise).
F
Payment of tax through share withholding.
G
Bona fide gift.
D
Disposition to issuer (e.g., share buyback by company).

fda.recall_class

Class I
Most serious recall — risk of death or serious injury.
Class II
Risk of temporary or reversible adverse health consequences.
Class III
Unlikely to cause adverse health consequences (labeling violations etc.).

fda.510k

510(k)
Pre-market notification for medical devices (Substantial Equivalence path).
Substantially Equivalent
FDA decision that a device is at least as safe/effective as a predicate.

fda.adverse

FAERS
FDA Adverse Event Reporting System (post-marketing drug safety).
MedDRA
Medical Dictionary for Regulatory Activities — standardized reaction terms.

weather.severity

Extreme
Extraordinary threat to life or property (NWS severity).
Severe
Significant threat to life or property (NWS severity).
Moderate
Possible threat to life or property (NWS severity).
Minor
Minimal or no known threat (NWS severity).

climate.usgs

MMI
Modified Mercalli Intensity — instrumental shaking-intensity estimate.
CDI
Community Determined Intensity — max user-reported intensity (DYFI).
DYFI
USGS 'Did You Feel It?' citizen-science felt-reports system.
PAGER
USGS automated impact-alert system (green/yellow/orange/red).
ml
Local (Richter) magnitude — small/regional earthquakes.
mb
Body-wave magnitude — global short-period seismic body waves.
mww
Moment magnitude (W-phase) — preferred for large global events.

register.type

Rule
Final rule adopted by an agency, legally binding.
Proposed Rule
Rule out for public comment before finalization.
Notice
Agency announcement that doesn't have direct legal effect.
Presidential Document
Executive Order, Proclamation, or other presidential action.

SEC identifiers

CIK
Central Index Key — SEC's permanent identifier for a filer (10-digit zero-padded).
CUSIP
Committee on Uniform Securities Identification Procedures — 9-char security ID.
EIN
Employer Identification Number — IRS taxpayer ID.
SIC
Standard Industrial Classification — 4-digit industry code.

Federal contracting identifiers

UEI
Unique Entity Identifier — federal contracting/grants identifier (replaced DUNS).
NAICS
North American Industry Classification System — replacement for SIC.
PSC
Product Service Code — federal procurement product/service classification.