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Rock Fiber, Inc.

Develops rock-based reinforcing fibers for composite and concrete manufacturers.

Updated Nov 9, 2026·Latest SEC filing Sep 22, 2026·Suggest an edit

About RockFiber

RockFiber is a private company based in Houston, Texas, incorporated in 2022 in Texas. It has reported $4,694,028 raised in two offerings on Form D since August 2024.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
May 25, 2025Sep 22, 2026$3,494,028of $3.5M target23$151KDebt, OptionsRule 506(b)Form D ↗
Aug 30, 2024Aug 30, 2024$1,200,000of $5.0M target0—EquityRule 506(b)Form D ↗
Total, two offerings$4,694,028

The filing for the offering first filed Aug 30, 2024 reports amount sold with no investors. Figures are shown as filed.

First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.

Leadership Team

Executive officers and directors listed on RockFiber's Form D filed Sep 22, 2026.

AT

Earlier filings also listed Jeff Nuss (ceo, last listed Aug 2024).

Sources

  1. SECRock Fiber, Inc. filing history
  2. CompanyRock Fiber contact
  3. CompanyRock Fiber team