Bleichroeder Sponsor 1 LLC

CIK 2031321 · last filed 2026-03-18

Bleichroeder Sponsor 1 LLC is a corporate insider who has filed 2 SEC Form 4 insider transactions across 2 companies since 2024. The most recent filing, for MRLN, was dated Mar 18, 2026. Across all open-market trades the lifetime net is +$12.8M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $60.5M 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.

Disclosed Exposure

$60.55M

Companies

2

Total Filings

2

Lifetime Open-Market Net

$12.75M

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
MRLN	10%+ Owner	8,800,833	$6.88	$60.55M	$0	1	2026-03-18
BACQU	10%+ Owner	425,000	$11.00	—	$12.75M	1	2024-11-06

Recent Filings

2 filings

Form 4 transactions across all companies, newest first.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-03-18	MRLN	Exer (M)	+25,127,499	$0	EDGAR
2024-11-06	BACQU	Mixed	+1,275,000	$12.75M	EDGAR

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.