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ISSUER PROFILE · CIK 0000788611

SIGMA LABS, INC.NTRP

1 13D/G filings 1 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
1
1 SC
Distinct filers
1
single filer
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
1.01
as of 2026-03-31

13D/G Filings Timeline · 1 total

FiledFormFilerStakeSharesIntent
2018-01-08 SC SABBY MANAGEMENT, LLC view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-03-31 129,800 1.01 +583.6%
2026-03-13 18,987 1.00 +131.5%
2026-02-27 8,202 1.00 -60.9%
2026-02-13 20,990 1.00 +184.1%
2026-01-30 7,388 1.00 -74.1%
2026-01-15 28,526 1.00 -68.0%
2025-12-31 89,168 1.36 -37.6%
2025-12-15 142,808 4.08 +3.3%

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