Champions Oncology CSBR Insider Ownership

NASDAQ CSBR

$4.74 +0.05 (+0.96%)

As of: Oct 19, 2026 · 3:59 PM EDT

Insider Holdings by Owner

2.92Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

14.79%

▼-0.034% pp QoQ

Shares Held by Insiders

2.06Mn

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

13.92Mn

13,918,569 shares

Direct Holdings

2.06Mn

Indirect: 0

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

In the last 12 months, insiders at Champions Oncology neither bought nor sold shares on the open market.

Outside the open market, Champions Oncology insiders acquired 94.41K shares through option exercises and conversions over the past 12 months.
According to Business Quant data, insiders at Champions Oncology reported 2.06Mn shares in total in their latest Form 4 filings, unchanged from 2.06Mn shares at the end of Q2 2026 and up 4.81% from 1.96Mn shares at the end of Q3 2025.
Champions Oncology insiders report no indirect holdings: all 2.06Mn shares are held directly.
Per Business Quant, 5 insiders of CSBR hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
Champions Oncology's top three insider holders by shares held are Joel Ackerman (Director, 1.06Mn shares), David Sidransky (Director, 767.04K shares) and Daniel Newman Mendelson (Director, 198.62K shares).
The largest insider, Joel Ackerman, holds 51.34% of CSBR's insider total.
Institutional holders reported 42.41% of Champions Oncology's outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 14.79%, and other investors, including the public, hold the remaining 42.80%.
A total of 6 Form 4 filings with transactions in Champions Oncology stock were made over the past 12 months, by 5 insiders.
The insider holdings and trades above for Champions Oncology reflect Form 4 filings through November 7, 2025.

Form 4 Holdings

Insiders Holding CSBR

Insiders 6

Shares held 2.92Mn

Of outstanding 20.96%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Joel Ackerman	Chief Executive Officer	1,056,539	1,056,539	36.2%	30 Oct, 2025
2	Ronnie Morris	Ceo	858,878	858,878	29.4%	21 Mar, 2023
3	David Sidransky	Director	767,043	767,043	26.3%	12 Oct, 2022
4	Daniel Newman Mendelson	Director	198,625	198,625	6.8%	16 Jan, 2024
5	Scott R Tobin	Director	30,000	30,000	1.0%	12 Oct, 2022
6	Philip P. Breitfeld	Director	5,717	5,717	0.2%	02 Apr, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

358 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
05 Nov, 2025	Daniel Newman Mendelson	Director	Acquired A	13,790	$6.80	$93.77K	13,790	Direct
05 Nov, 2025	Joel Ackerman	Director	Acquired A	21,216	$6.80	$144.27K	21,216	Direct
05 Nov, 2025	David Sidransky	Director	Acquired A	21,216	$6.80	$144.27K	21,216	Direct
05 Nov, 2025	Scott R Tobin	Director, TenPercentOwner	Acquired A	25,460	$6.80	$173.13K	25,460	Direct
05 Nov, 2025	Philip P. Breitfeld	Director	Acquired A	13,790	$6.80	$93.77K	13,790	Direct
30 Oct, 2025	Joel Ackerman	Director	Acquired M	94,405	$2.10	$198.25K	1,056,539	Direct
30 Oct, 2025	Joel Ackerman	Director	Disposed M	94,405	$2.10	$198.25K	0	Direct
25 Mar, 2025	Philip P. Breitfeld	Director	Disposed J	4,150	$0.00	$0	5,717	Direct
12 Nov, 2024	Daniel Newman Mendelson	Director	Acquired A	21,590	$4.64	$100.18K	21,590	Direct
12 Nov, 2024	Philip P. Breitfeld	Director	Acquired A	18,715	$4.64	$86.84K	18,715	Direct
12 Nov, 2024	Scott R Tobin	Director, TenPercentOwner	Acquired A	34,550	$4.64	$160.31K	34,550	Direct
12 Nov, 2024	David Sidransky	Director	Acquired A	21,880	$4.64	$101.52K	21,880	Direct
12 Nov, 2024	Joel Ackerman	Director	Acquired A	43,190	$4.64	$200.40K	43,190	Direct
31 Oct, 2024	Joel Ackerman	Director	Acquired M	88,470	$2.10	$185.79K	945,467	Direct
31 Oct, 2024	Joel Ackerman	Director	Acquired M	16,667	$5.43	$90.50K	962,134	Direct
31 Oct, 2024	Joel Ackerman	Director	Disposed M	88,470	$2.10	$185.79K	0	Direct
31 Oct, 2024	Joel Ackerman	Director	Disposed M	16,667	$5.43	$90.50K	0	Direct
12 Jan, 2024	Daniel Newman Mendelson	Director	Acquired P	1,000	$6.50	$6.50K	198,625	Direct
11 Jan, 2024	Daniel Newman Mendelson	Director	Acquired P	2,000	$6.27	$12.54K	197,625	Direct
10 Jan, 2024	Daniel Newman Mendelson	Director	Acquired P	2,944	$6.31	$18.58K	195,625	Direct

Showing 1 to 20 of 358 transactions