Sigma5
Sigma5 Inc.
Sigma5 is a team of scientists and technologists creating breakthrough measurement technology
sigma5.io · Santa Cruz, CA
Funding event
The round itself, as filedInferred stagePre-seed
Sold of offered$270K of $500K
Filed2026-11-04
Days since filing9
- Exemption claimed
- Rule 506(b)
- First-ever Form D
- Yes
- Date of first sale
- 2026-10-06
Investors
No investors named: Form D does not list them
Officers on the filing
Names and roles as filed; addresses are never stored- Kevin BundyExecutive Officer · Director · Promoter
- Jay BartelsExecutive Officer · Director · Promoter
- Douglas LeeExecutive Officer
- Matthew DeMartinoExecutive Officer
Health flags
Three flags, each with the raw inputs behind it · as of 2026-11-13UndersubscribedNot flagged$270K of $500K sold1.2 months since first sale
Prior raiseNot flaggedPrior raise not known—
AmendedNot flaggedNo amendmentNo D/A on file
Open roles
On the employer's own careers page · checked 2026-11-080
Pre-posting windowNot enough dataShown once this sector and stage have 20 observed lags from filing to first posting.
No open roles foundWe read careers pages daily.
Also raised in Industrial
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34 rounds in Industrial in the 28 days to 2026-11-12, against 39 in the 28 days before.