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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
1.00
as of 2026-08-31

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
2026-08-31 63,900 1.00 -28.3%
2026-08-14 89,067 1.70 +150.0%
2026-07-31 35,633 1.00 -65.9%
2026-07-15 104,444 1.00 +26.4%
2026-06-30 82,598 1.00 +34.9%
2026-06-15 61,230 1.00 +146.5%
2026-05-29 24,839 1.00 -57.7%
2026-05-15 58,671 1.50 -11.9%
2026-04-30 66,607 1.00 -20.3%
2026-04-15 83,614 1.00 -35.6%
2026-03-31 129,800 1.01 +583.6%
2026-03-13 18,987 1.00 +131.5%

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