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MAINSPRING INC
MAINSPRING INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0001017174, and its reported industry is...
Overview
MAINSPRING INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0001017174, and its reported industry is Services-Business Services, NEC. The retained history contains 12 filings, including SC 13G filed on 2002-02-01. Each filing retains its accession, filing date and original SEC document link. This historical evidence does not establish current registration, listing, ownership or financial condition.
Company overview
- Legal name
- MAINSPRING INC
- Former names in filing history
- MAINSPRING COMMUNICATIONS INC (2000-02-11 to 2000-04-11)
- Classification
- Company
- Industry (SIC)
- 7389 — Services-Business Services, NEC
- Headquarters
- Cambridge, MA, United States
- Incorporated in
- DE
- Fiscal year end
- December 31
- SEC CIK
- 0001017174
Recent SEC filings
| Form | Filed | Period | Filing |
|---|---|---|---|
| SC 13G | — | SCHEDULE 13G AMENDMENT | |
| SC 13G | — | REGISTRATION STATEMENT | |
| SC 13D | — | Form SC 13D | |
| 10-Q | FORM 10-Q (HTML) | ||
| SC 13D | — | Form SC 13D | |
| 10-K/A | AMENDMENT #1 TO FORM 10-K | ||
| 8-K | FORM 8-K | ||
| 10-K | FORM 10-K | ||
| SC 13G | — | GRAYLOCK | |
| SC 13G | — | SCHEDULE 13G | |
| SC 13G | — | SCHEDULE 13G - 02-14-01 - MAINSPRING INCORPORATED | |
| SC 13G | — | STATEMENT OF BENEFICIAL OWNERSHIP |
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