Apellis Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US03753U1060
DIESES SYMBOL IST NICHT MEHR AKTIV

SecurityAPLS / Apellis Pharmaceuticals, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership738,440 shares
Latest Disclosed Value $ 29,707,442
Northern Trust Corp reports 6.02% increase in ownership of APLS / Apellis Pharmaceuticals, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 738,440 shares of Apellis Pharmaceuticals, Inc. (US:APLS) valued at $29,707,441 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 696,521 shares of Apellis Pharmaceuticals, Inc.. This represents a change in shares of 6.02% during the quarter. The current value of the position is $30,298,193 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.

Upgrade to unlock premium data and export to Excel .

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 APELLIS PHARMACEUTICALS COM 03753U106 738,440 41,919 6.02 29,707 69.79 0.0008
2026-02-17 2025-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 696,521 147,273 26.81 17,497 40.77 0.0005
2025-11-14 2025-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 549,248 23,366 4.44 12,429 36.54 0.0004
2025-08-13 2025-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 525,882 7,188 1.39 9,103 -19.75 0.0013
2025-05-13 2025-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 518,694 -28,582 -5.22 11,344 -35.05 0.0017
2025-02-14 2024-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 547,276 94,174 20.78 17,464 33.64 0.0025
2024-11-13 2024-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 453,102 -9,116 -1.97 13,067 -26.30 0.0021
2024-08-14 2024-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 462,218 21,762 4.94 17,731 -31.52 0.0030
2024-05-14 2024-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 440,456 -8,270 -1.84 25,890 -3.61 0.0045
2024-02-13 2023-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 448,726 -1,704 -0.38 26,861 56.76 0.0049
2023-11-13 2023-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 450,430 -401,842 -47.15 17,134 -77.93 0.0033
2023-08-11 2023-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 852,272 -16,916 -1.95 77,642 35.43 0.0149
2023-05-15 2023-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 869,188 12,067 1.41 57,332 29.35 0.0114
2023-02-13 2022-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 857,121 7,933 0.93 44,322 -23.58 0.0093
2022-11-14 2022-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 849,188 16,490 1.98 58,000 54.03 0.0132
2022-08-12 2022-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 832,698 67,496 8.82 37,654 -3.15 0.0081
2022-05-13 2022-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 765,202 21,335 2.87 38,880 10.55 0.0068
2022-02-08 2021-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 743,867 81,181 12.25 35,171 61.02 0.0058
2021-11-15 2021-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 662,686 -11,811 -1.75 21,842 -48.76 0.0039
2021-08-13 2021-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 674,497 10,173 1.53 42,628 49.54 0.0075
2021-05-12 2021-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 664,324 -23,860 -3.47 28,506 -27.58 0.0053
2021-02-11 2020-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 688,184 -17,976 -2.55 39,364 84.76 0.0077
2020-11-16 2020-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 706,160 8,276 1.19 21,306 -6.52 0.0047
2020-08-14 2020-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 697,884 13,015 1.90 22,792 24.22 0.0054
2020-05-14 2020-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 684,869 105,867 18.28 18,348 3.49 0.0053
2020-02-14 2019-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 579,002 -12,398 -2.10 17,729 24.45 0.0040
2019-11-13 2019-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 591,400 122,868 26.22 14,246 20.00 0.0034
2019-08-13 2019-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 468,532 28,500 6.48 11,872 38.34 0.0028
2019-05-13 2019-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 440,032 4,304 0.99 8,582 49.33 0.0021
2019-02-12 2018-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 435,728 -5,938 -1.34 5,747 -26.81 0.0016
2018-11-14 2018-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 441,666 14,637 3.43 7,852 -16.42 0.0019
2018-09-18 2018-06-30 13F/A-1 APELLIS PHARMACEUTICALS COM 03753U106 427,029 307,586 257.52 9,395 255.87 0.0024
2018-08-14 2018-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 405,435 285,992 8,920
2018-05-09 2018-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 119,443 4,316 3.75 2,640 5.68 0.0007
2018-02-14 2017-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 115,127 115,127 2,498 0.0006
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.