ImmuCell
Makes First Defense antibody products to prevent scours in newborn dairy and beef calves.
$9.94
After-hours close−0.07 (−0.70%)
At close$10.01(−0.10%)
Something off on this page? Send us feedback.
Breakdown13F · Form 4
Institutions 15.13%1.37M sharesInsiders 3.16%285.5K sharesOther 81.71%7.39M shares
Shares outstanding 9.05M · Float 6.00M · 66.3% free float
Institutions13F, as of Mar 31, 2026
27 holders · 1.37M shares · 5 new positions · 12 increased · 4 reduced · 4 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Vanguard Capital Management LLC | 260.3K | 2.88% | +260.3Knew | May 15, 2026 |
| Morgan Stanley | 221.7K | 2.45% | +97.0K | May 15, 2026 |
| Renaissance Technologies LLC | 151.8K | 1.68% | +1.1K | May 14, 2026 |
| Cresset Asset Management, LLC | 135.3K | 1.50% | 0 | May 15, 2026 |
| Bleichroeder LP | 101.6K | 1.12% | 0 | May 14, 2026 |
| Geode Capital Management, LLC | 65.8K | 0.73% | −6.5K | May 15, 2026 |
| Dimensional Fund Advisors LP | 56.0K | 0.62% | +1.7K | May 7, 2026 |
| Steadtrust LLC | 54.4K | 0.60% | −2.4K | Apr 15, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Ejnar A. Knudsen III | 9.21% | 832.8K | 13D | Nov 20, 2025 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Michael F. Brigham | director | 205.7K | 2.27% | Mar 24, 2026 |
| David Scott Tomsche | director | 57.5K | 0.64% | Nov 28, 2025 |
| Boekhorst Paul Francis Olivier te | director, officer: President and CEO | 17.8K | 0.20% | Jun 22, 2026 |
| Gloria F. Basse | director | 3.5K | 0.04% | Jun 13, 2025 |
| Bryan K. Gathagan | director | 1.0K | 0.01% | Jun 12, 2025 |
2 ten-percent owners hold 240.0K shares by Form 4, outside the officers-and-directors figure above · 9 people have not refiled in the last 18 months (733.6K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jun 18, 2026 | Boekhorst Paul Francis Olivier tedirector, officer: President and CEO | Purchase | 8,000 | $9.50 | 17,785 |
| Dec 3, 2025 | Boekhorst Paul Francis Olivier tedirector, officer: President and CEO | Purchase · 3 lots | 9,675 | $5.03 | 9,785 |
| Dec 4, 2025 | Boekhorst Paul Francis Olivier tedirector, officer: President and CEO | Purchase | 2,432 | $5.50 | 9,738 |
| Dec 2, 2025 | Boekhorst Paul Francis Olivier tedirector, officer: President and CEO | Purchase | 3,708 | $4.87 | 3,708 |
| Nov 25, 2025 | David Scott Tomschedirector | Purchase · 2 lots | 3,266 | $4.76 | 57,460 |
CongressHouse and Senate disclosures
Not reported.