Champions Oncology CSBR Insider Ownership

NASDAQ CSBR
$5.01 -0.09 (-1.76%)
As of: Sep 9, 2026 · 3:58 PM EDT

Insider Holdings by Owner

2.92Mn Shares

Insider Ownership Statistics

as of 31 Dec, 2024
Insider Ownership
12.23%
▲+0.022% pp QoQ
Shares Held by Insiders
1.71Mn
filed for Dec 2024
■0.00% QoQ
Shares Outstanding
14.46Mn
14,457,837 shares
Direct Holdings
1.71Mn
Indirect: 0
Net Shares Traded (QoQ)
0
no net change in Dec 2024
Insiders Holding Shares
6
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

Quarter ending 31 Dec, 2024

As of September 09, 2026, the three largest insider holders of CSBR are Joel Ackerman (Chief Executive Officer, 1.06Mn shares), Ronnie Morris (Ceo, 858.88K shares), David Sidransky (Director, 767.04K shares).

Form 4 Holdings

Insiders Holding CSBR

Insiders 6
Shares held 2.92Mn
Of outstanding 20.17%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Joel Ackerman Chief Executive Officer 1,056,539 0 1,056,539 36.2% 30 Oct, 2025
2 Ronnie Morris Ceo 858,878 0 858,878 29.4% 21 Mar, 2023
3 David Sidransky Director 767,043 0 767,043 26.3% 12 Oct, 2022
4 Daniel Newman Mendelson Director 198,625 0 198,625 6.8% 16 Jan, 2024
5 Scott R Tobin Director 30,000 0 30,000 1.0% 12 Oct, 2022
6 Philip P. Breitfeld Director 5,717 0 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

744 Insider Transactions

Source SEC Form 4
Latest quarter Dec 2024
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
05 Nov, 2025 Scott R Tobin Director, TenPercentOwner Acquired A 25,460 $6.80 $173.13K 25,460 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
05 Nov, 2025 Daniel Newman Mendelson Director Acquired A 13,790 $6.80 $93.77K 13,790 Direct
05 Nov, 2025 Scott R Tobin Director, TenPercentOwner Acquired A 25,460 $6.80 $173.13K 25,460 Direct
05 Nov, 2025 Joel Ackerman Director Acquired A 21,216 $6.80 $144.27K 21,216 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 Scott R Tobin Director, TenPercentOwner Acquired A 34,550 $4.64 $160.31K 34,550 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