SEC ownership of CITIUS ONCOLOGY, INC.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001851484.

Comparable stake leader

Citius Pharmaceuticals, Inc.

Disclosed value leader

Citius Pharmaceuticals, Inc.

Comparable rows

20/32

Latest evidence

30 Jun 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
20 of 32
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Citius Pharmaceuticals, Inc.
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
30 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001851484
Issuer location
Cranford, NJ

Ownership snapshot

Top shareholders of CITIUS ONCOLOGY, INC. (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
Citius Pharmaceuticals, Inc.
Disclosed value leader
Citius Pharmaceuticals, Inc.
Comparable rows
20/32
Latest evidence
30 Jun 2026
13D/G 3/4/5 13F Lead comparable stake: 71% 12 rows are not safely comparable across share classes. 13D/G row: Citius Pharmaceuticals, Inc. Showing 1-8 of 32 holder rows.

Quick read

Citius Pharmaceuticals, Inc. leads the comparable SEC ownership view at 71%.

20 of 32 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 Citius Pharmaceuticals, Inc.'s linked filing trail.
Comparable ownership Top 5
Citius Pharmaceuticals, Inc. 71%
ARMISTICE CAPITAL, LLC 10%
BANK OF AMERICA CORP /DE/ 4.1%
VANGUARD CAPITAL MANAGEMENT LLC 0.58%
UBS Group AG 0.36%

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

Detailed SEC evidence table Showing 1-8 of 32 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Citius Pharmaceuticals, Inc.
13D/G 3/4/5
10%+ Owner
71%
$59,444,654
66,049,615 shares
$0 15 May 2026
ARMISTICE CAPITAL, LLC
13D/G 13F
Company
10%
$6,547,487
9,353,553 shares
+$37,545 30 Jun 2026
BANK OF AMERICA CORP /DE/
13F
Company
13F
4.1%
$2,492,854
3,835,160 shares
30 Jun 2026
VANGUARD CAPITAL MANAGEMENT LLC
13F
Company
13F
0.58%
$355,111
546,325 shares
30 Jun 2026
UBS Group AG
13F
Company
13F
0.36%
$217,502
334,619 shares
30 Jun 2026
GEODE CAPITAL MANAGEMENT, LLC
13F
Company
13F
0.26%
$159,538
245,407 shares
30 Jun 2026
VANGUARD FIDUCIARY TRUST CO
13F
Company
13F
0.13%
$79,242
121,910 shares
30 Jun 2026
IFP Advisors, Inc
13F
Company
13F
0.11%
$69,836
107,424 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 20 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 1-16 of 16 reporting-owner rows connected to CITIUS ONCOLOGY, INC.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
16
Largest Forms 3/4/5 holder
Leonard L. Mazur
Net 12M change
$0
Latest report
10 Aug 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Leonard L. Mazur Chief Executive Officer, Director $9,790,000 Mixed 19 Sep 2025
Myron Z. Holubiak Secretary, Director $4,268,000 Mixed 19 Sep 2025
Jaime Bartushak Chief Financial Officer $3,924,250 Mixed 19 Sep 2025
Myron Czuczman Chief Medical Officer $3,924,250 Mixed 19 Sep 2025
Joel David Mayersohn Director $911,185 Mixed 19 Sep 2025
Suren G. Dutia Director $676,500 Mixed 19 Sep 2025
Carol Webb Director $676,500 Mixed 19 Sep 2025
Dennis M. Mcgrath Director $676,500 Mixed 19 Sep 2025
Eugene Myron Holuka Director $676,500 Mixed 19 Sep 2025
Robert Joseph Smith Director $624,250 Mixed 19 Sep 2025
Jonathan Peri Director $0 Mixed 10 Aug 2026
Citius Pharmaceuticals, Inc. 10%+ Owner Mixed 12 Aug 2024
Cathy Jiang Director Mixed 13 Oct 2022
Xiaofeng Yuan Chief Executive Officer, Director, 10%+ Owner Mixed 13 Oct 2022
Dahe Zhang Chief Financial Officer, Director, 10%+ Owner Mixed 13 Oct 2022
Brian Shawn Hartzband Director Mixed 13 Oct 2022

Recent insider transactions for CITIUS ONCOLOGY, INC.

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
Jonathan Peri CTOR Common Stock 0 0 10 Aug 2026 Direct
* marks a reported price that did not pass the local price check.
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