Novavax, Inc.
US ˙ NasdaqGS ˙ US6700024010

SecurityNVAX / Novavax, Inc.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership105,168 shares
Latest Disclosed Value $ 856,068
Oppenheimer & Co Inc reports 193.68% increase in ownership of NVAX / Novavax, Inc.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 105,168 shares of Novavax, Inc. (US:NVAX) valued at $856,068 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 35,811 shares of Novavax, Inc.. This represents a change in shares of 193.68% during the quarter. The current value of the position is $1,072,714 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)
2026-04-23 2026-03-31 13F NOVAVAX COM NEW 670002401 105,168 69,357 193.68 856 256.67 0.0104
2026-02-02 2025-12-31 13F NOVAVAX COM NEW 670002401 35,811 -38,132 -51.57 241 -62.56 0.0034
2025-11-06 2025-09-30 13F NOVAVAX COM NEW 670002401 73,943 5,391 7.86 641 48.72 0.0078
2025-07-31 2025-06-30 13F NOVAVAX COM NEW 670002401 68,552 17,814 35.11 432 32.62 0.0057
2025-04-23 2025-03-31 13F NOVAVAX COM NEW 670002401 50,738 7,165 16.44 325 -7.14 0.0049
2025-02-05 2024-12-31 13F NOVAVAX COM NEW 670002401 43,573 31,559 262.69 350 131.79 0.0052
2024-11-05 2024-09-30 13F NOVAVAX COM NEW 670002401 12,014 370 3.18 152 2.72 0.0023
2024-08-08 2024-06-30 13F NOVAVAX COM NEW 670002401 11,644 -475 -3.92 147 157.89 0.0023
2024-05-07 2024-03-31 13F NOVAVAX COM NEW 670002401 12,119 -2,570 -17.50 58 -18.57 0.0010
2024-02-13 2023-12-31 13F NOVAVAX COM NEW 670002401 14,689 -1,678 -10.25 71 -40.68 0.0013
2023-11-08 2023-09-30 13F NOVAVAX COM NEW 670002401 16,367 -2,750 -14.39 118 -16.90 0.0024
2023-08-03 2023-06-30 13F NOVAVAX COM NEW 670002401 19,117 -4,550 -19.23 142 -13.41 0.0028
2023-05-10 2023-03-31 13F NOVAVAX COM NEW 670002401 23,667 -600 -2.47 164 -34.14 0.0035
2023-02-08 2022-12-31 13F NOVAVAX COM NEW 670002401 24,267 -9,721 -28.60 249 -59.77 0.0057
2022-11-14 2022-09-30 13F NOVAVAX COM NEW 670002401 33,988 -20,664 -37.81 619 -77.98 0.0145
2022-08-08 2022-06-30 13F NOVAVAX COM NEW 670002401 54,652 -4,950 -8.31 2,811 -35.97 0.0605
2022-05-12 2022-03-31 13F NOVAVAX COM NEW 670002401 59,602 15,452 35.00 4,390 -30.50 0.0791
2022-02-02 2021-12-31 13F NOVAVAX COM NEW 670002401 44,150 14,197 47.40 6,317 1.72 0.1104
2021-11-12 2021-09-30 13F NOVAVAX COM NEW 670002401 29,953 24,892 491.84 6,210 477.67 0.1162
2021-08-03 2021-06-30 13F NOVAVAX COM NEW 670002401 5,061 -666 -11.63 1,075 3.46 0.0193
2021-05-10 2021-03-31 13F NOVAVAX COM NEW 670002401 5,727 1,730 43.28 1,039 132.96 0.0207
2021-02-11 2020-12-31 13F NOVAVAX COM NEW 670002401 3,997 137 3.55 446 6.70 0.0094
2020-11-13 2020-09-30 13F NOVAVAX COM NEW 670002401 3,860 -4,057 -51.24 418 -36.67 0.0105
2020-08-11 2020-06-30 13F NOVAVAX COM NEW 670002401 7,917 -20,266 -71.91 660 72.77 0.0171
2020-05-08 2020-03-31 13F NOVAVAX COM NEW 670002401 28,183 28,183 382 0.0116
2019-08-09 2019-06-30 13F NOVAVAX COM 670002104 0 -72,041 -100.00 0 -100.00
2019-04-24 2019-03-31 13F NOVAVAX COM 670002104 72,041 72,041 40 0.0011
2018-05-01 2018-03-31 13F NOVAVAX COM 670002104 0 -10,000 -100.00 0 -100.00
2018-02-07 2017-12-31 13F NOVAVAX COM 670002104 10,000 -5,580 -35.82 13 -27.78 0.0003
2017-11-09 2017-09-30 13F NOVAVAX COM 670002104 15,580 -3,000 -16.15 18 -14.29 0.0005
2017-08-09 2017-06-30 13F NOVAVAX COM 670002104 18,580 1,830 10.93 21 -72.00 0.0006
2014-05-09 2014-03-31 13F NOVAVAX COM 670002104 16,750 750 4.69 75 -8.54 0.0022
2014-02-12 2013-12-31 13F NOVAVAX COM 670002104 16,000 0 0.00 82 64.00 0.0026
2013-11-01 2013-09-30 13F NOVAVAX COM 670002104 16,000 -26,000 -61.90 50 -41.86 0.0018
2013-08-14 2013-06-30 13F NOVAVAX COM 670002104 42,000 42,000 86 0.0033
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.