Home

THOMAS GIRSCHWEILER

CIK 1273547 · last filed 2020-11-30

THOMAS GIRSCHWEILER is a corporate insider who has filed 17 SEC Form 4 insider transactions across 1 company since 2014. The most recent filing shows the insider sold $36.0M of BLFS on Nov 30, 2020. Across all open-market trades the lifetime net is −$65.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $30.3M across reported positions.

"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.

Loading insider history…
Disclosed Exposure

$30.27M

Companies

1

Total Filings

17

Lifetime Open-Market Net

-$65.67M

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
BLFS Director 1,076,814 $28.11 $30.27M -$65.67M 10 2020-11-30

Recent Filings

17 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
2020-11-30 BLFS Sell (S) −1,600,000 -$36.00M EDGAR
2020-06-03 BLFS Mixed +847,360 -$14.97M EDGAR
2017-10-03 BLFS Grant (A) +1,774 $0 EDGAR
2017-07-07 BLFS Grant (A) +4,184 $0 EDGAR
2017-05-26 BLFS Exer (X) +142,858 $160.0K EDGAR
2016-08-25 BLFS Exer (X) +142,856 $120.0K EDGAR
2016-03-18 BLFS Grant (A) — $0 EDGAR
2015-12-04 BLFS Exer (X) +142,858 $140.0K EDGAR
2015-05-06 BLFS Grant (A) — $0 EDGAR
2014-03-26 BLFS Other (J) +1,544,194 $0 EDGAR
Showing 1–10 of 17
Page 1 of 2
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.