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Shannon Hall

CIK 1621222 · Executive Vice President · last filed 2026-08-17

Shannon Hall is an Executive Vice President who has filed 30 SEC Form 4 insider transactions across 2 companies since 2014. The most recent filing, for MLAB, was dated Aug 17, 2026. Across all open-market trades the lifetime net is −$886.8K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.0M across reported positions. 15 SEC filings were submitted jointly with MESA LABORATORIES INC /CO/.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$1.05M

Companies

2

Total Filings

30

Lifetime Open-Market Net

-$886.8K

Filer Profile

Reported Address
123 CLEARFIELD DRIVE
SAN FRANCISCO, CA 94132
Related Filers
MESA LABORATORIES INC /CO/ — 15 joint filings, latest 2026-08-17
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
MLAB Director 6,973 $120.87 $842.8K -$40.2K 14 2026-08-17
BIO.B Executive Vice President 564 $365.08 $206.1K -$846.5K 16 2017-09-14

Recent Filings

30 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-17 MLAB Exer (M) +2,784 $0 EDGAR
2025-08-18 MLAB Mixed +1,404 $0 EDGAR
2024-09-06 MLAB Exer (M) +1,074 $0 EDGAR
2024-08-19 MLAB Grant (A) — $0 EDGAR
2023-09-06 MLAB Exer (M) — $0 EDGAR
2023-08-16 MLAB Exer (M) +754 $0 EDGAR
2022-12-09 MLAB Sell (S) −230 -$40.2K EDGAR
2022-09-02 MLAB Exer (M) +431 $0 EDGAR
2022-08-18 MLAB Grant (A) — $0 EDGAR
2021-09-01 MLAB Grant (A) — $0 EDGAR
Showing 1–10 of 30
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.