# TRUSTED INFORMATION SYSTEMS INC

TRUSTED INFORMATION SYSTEMS INC is a company headquartered in Glenwood, MD, United States.

## Company overview

- **Legal name:** TRUSTED INFORMATION SYSTEMS INC
- **Classification:** Company
- **Industry (SIC):** 7372 — Services-Prepackaged Software
- **Headquarters:** Glenwood, MD, United States
- **Incorporated in:** DE
- **Fiscal year end:** December 31
- **SEC CIK:** 0001013355

## About

TRUSTED INFORMATION SYSTEMS INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0001013355, and its reported industry is Services-Prepackaged Software. The retained history contains 12 filings, including 10-K/A filed on 1998-03-25. 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.

## Recent SEC filings

- Form 10-K/A — filed 1998-03-25 — period 1997-12-26 — FORM 10-K, AMENDMENT NO. 1
- Form 10-K — filed 1998-03-20 — period 1997-12-26 — FORM 10-K
- Form SC 13D — filed 1998-03-05 — SCHEDULE 13D
- Form 8-K — filed 1998-02-25 — period 1998-02-24 — MERGER WITH NETWORKS ASSOCIATES, INC.
- Form SC 13G — filed 1998-02-17 — SCHEDULE 13G OF STEPHEN T. WALKER
- Form SC 13G — filed 1998-02-17 — SCHEDULE 13G OF MARTHA A. BRANSTAD
- Form SC 13G — filed 1998-02-17 — SCHEDULE 13G FOR STEPHEN E. SMAHA
- Form 10-Q — filed 1997-11-10 — period 1997-09-26 — FORM 10-Q FOR THIRD QUARTER 1997
- Form SC 13D — filed 1997-10-27 — SCHEDULE 13D OF STEPHEN E. SMAHA
- Form 8-K — filed 1997-10-27 — period 1997-10-16 — MERGER WITH HAYSTACKS LABORATORIES, INC.
- Form 8-K — filed 1997-10-24 — period 1997-10-16 — MERGER WITH HAYSTACKS LABORATORIES, INC.
- Form 10-Q — filed 1997-08-11 — period 1997-06-27 — FORM 10-Q FOR SECOND QUARTER 1997

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Updated: 2026-10-23T22:51:19Z

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