SEC ownership of Spartacus Acquisition Corp. II

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002097364.

Comparable stake leader

Fort Baker Capital Management LP

Disclosed value leader

Fort Baker Capital Management LP

Comparable rows

27/50

Latest evidence

03 Aug 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
27 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Fort Baker Capital Management LP
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
03 Aug 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0002097364
Issuer location
Austin, TX

Ownership snapshot

Top shareholders of Spartacus Acquisition Corp. II (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Fort Baker Capital Manage...
Disclosed value leader
Fort Baker Capital Manage...
Comparable rows
27/50
Latest evidence
03 Aug 2026
13F 13D/G Lead comparable stake: 8.6% 23 rows are not safely comparable across share classes. 13D/G row: Fort Baker Capital Management LP Showing 1-8 of 50 holder rows.

Quick read

Fort Baker Capital Management LP leads the comparable SEC ownership view at 8.6%.

27 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Fort Baker Capital Management LP's linked filing trail.
Comparable ownership Top 5
Fort Baker Capital Management LP 8.6%
Adage Capital Management, L.P. 7.8%
Linden Capital L.P. 5.5%
RP Investment Advisors LP 5.4%
Harraden Circle Investments, LLC 3.2%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Fort Baker Capital Management LP
13F 13D/G
Company
8.6%
from 13D/G
$19,773,417
2,057,600 shares
mixed-class rows
30 Jun 2026
Adage Capital Management, L.P.
13D/G
7.8%
$17,892,000
1,800,000 shares
$0 31 Mar 2026
Linden Capital L.P.
13D/G
Linden Advisors LP
5.5%
$12,551,079
1,253,854 shares
$0 03 Aug 2026
RP Investment Advisors LP
13D/G
5.4%
1,250,000 shares
$0 12 Feb 2026
Harraden Circle Investments, LLC
13F 13D/G
Company
3.2%
from 13D/G
$7,529,485
1,226,098 shares
mixed-class rows
30 Jun 2026
LMR Partners LLP
13F
Company
13F
3.7%
$8,653,000
850,000 shares
30 Jun 2026
MILLENNIUM MANAGEMENT LLC
13F
Company
13F
1.7%
$4,004,000
400,000 shares
30 Jun 2026
TUDOR INVESTMENT CORP ET AL
13F
Company
13F
1.6%
$3,817,500
375,000 shares
30 Jun 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 14 Sep 2025.

Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 0
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 0 0 $0 $0 $0
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-7 of 7 reporting-owner rows connected to Spartacus Acquisition Corp. II. Open a relationship link for the CIK-to-CIK filing trail.

Rows
7
Largest Forms 3/4/5 holder
Peter D. Aquino
Net 12M change
$0
Latest report
10 Feb 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Peter D. Aquino Director Mixed 10 Feb 2026
Igor Volshteyn Chief Executive Officer, Director Mixed 10 Feb 2026
Mark Paul Szynkowski Chief Financial Officer Mixed 10 Feb 2026
Eric J. Edidin Director Mixed 10 Feb 2026
Spartacus Sponsor II LLC 10%+ Owner Mixed 10 Feb 2026
Christoper W. Downie Director Mixed 10 Feb 2026
David Scott Marshack Director Mixed 10 Feb 2026

Recent insider transactions for Spartacus Acquisition Corp. II

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
No insider transactions were found in the last 12 months for this issuer.
* marks a reported price that did not pass the local price check.
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