ImmuCell Corporation
US ˙ NasdaqCM ˙ US4525253062

SecurityICCC / ImmuCell Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership41,618 shares
Latest Disclosed Value $ 263,442
Northern Trust Corp reports 9.54% increase in ownership of ICCC / ImmuCell Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 41,618 shares of ImmuCell Corporation (US:ICCC) valued at $263,442 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 37,993 shares of ImmuCell Corporation. This represents a change in shares of 9.54% during the quarter. The current value of the position is $410,770 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F IMMUCELL COM PAR 452525306 41,618 3,625 9.54 263 12.88 0.0000
2026-02-17 2025-12-31 13F IMMUCELL COM PAR 452525306 37,993 199 0.53 234 -1.27 0.0000
2025-11-14 2025-09-30 13F IMMUCELL COM PAR 452525306 37,794 -4,727 -11.12 236 -20.00 0.0000
2025-08-13 2025-06-30 13F IMMUCELL COM PAR 452525306 42,521 137 0.32 296 45.32 0.0000
2025-05-13 2025-03-31 13F IMMUCELL COM PAR 452525306 42,384 -1,990 -4.48 203 -10.96 0.0000
2025-02-14 2024-12-31 13F IMMUCELL COM PAR 452525306 44,374 14,982 50.97 229 115.09 0.0000
2024-11-13 2024-09-30 13F IMMUCELL COM 452525306 29,392 831 2.91 107 -23.19 0.0000
2024-08-14 2024-06-30 13F IMMUCELL COM 452525306 28,561 -1,434 -4.78 139 -12.66 0.0000
2024-05-14 2024-03-31 13F IMMUCELL COM 452525306 29,995 -2,651 -8.12 159 -4.82 0.0000
2024-02-13 2023-12-31 13F IMMUCELL COM 452525306 32,646 19,781 153.76 166 144.12 0.0000
2023-11-13 2023-09-30 13F IMMUCELL COM 452525306 12,865 788 6.52 69 13.33 0.0000
2023-08-11 2023-06-30 13F IMMUCELL COM 452525306 12,077 -339 -2.73 60 -4.76 0.0000
2023-05-15 2023-03-31 13F IMMUCELL COM 452525306 12,416 -29 -0.23 63 -16.00 0.0000
2023-02-13 2022-12-31 13F IMMUCELL COM 452525306 12,445 -222 -1.75 76 -21.05 0.0000
2022-11-14 2022-09-30 13F IMMUCELL COM 452525306 12,667 34 0.27 95 -13.64 0.0000
2022-08-12 2022-06-30 13F IMMUCELL COM 452525306 12,633 -692 -5.19 110 -14.06 0.0000
2022-05-13 2022-03-31 13F IMMUCELL COM 452525306 13,325 50 0.38 128 20.75 0.0000
2022-02-08 2021-12-31 13F IMMUCELL COM 452525306 13,275 -228 -1.69 106 -16.54 0.0000
2021-11-15 2021-09-30 13F IMMUCELL COM 452525306 13,503 38 0.28 127 -0.78 0.0000
2021-08-13 2021-06-30 13F IMMUCELL COM 452525306 13,465 0 0.00 128 -1.54 0.0000
2021-05-12 2021-03-31 13F IMMUCELL COM 452525306 13,465 600 4.66 130 71.05 0.0000
2021-02-11 2020-12-31 13F IMMUCELL COM 452525306 12,865 1,271 10.96 76 20.63 0.0000
2020-11-16 2020-09-30 13F IMMUCELL COM 452525306 11,594 -1,819 -13.56 63 0.00 0.0000
2020-08-14 2020-06-30 13F IMMUCELL COM 452525306 13,413 447 3.45 63 28.57 0.0000
2020-05-14 2020-03-31 13F IMMUCELL COM 452525306 12,966 12,966 49 0.0000
2019-02-12 2018-12-31 13F IMMUCELL COM 452525306 0 -10,443 -100.00 0 -100.00
2018-11-14 2018-09-30 13F IMMUCELL COM 452525306 10,443 0 0.00 87 22.54 0.0000
2018-09-18 2018-06-30 13F/A-1 IMMUCELL COM 452525306 10,443 10,443 71 0.0000
2018-08-14 2018-06-30 13F IMMUCELL COM 452525306 10,443 71 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.