Emergent BioSolutions Inc.
US ˙ NYSE ˙ US29089Q1058

SecurityEBS / Emergent BioSolutions Inc.
InstitutionFmr Llc
Latest Disclosed Ownership153,888 shares
Latest Disclosed Value $ 1,277,267
Fmr Llc reports 30.07% increase in ownership of EBS / Emergent BioSolutions Inc.

On May 15, 2026 - Fmr Llc filed a 13F-HR form disclosing ownership of 153,888 shares of Emergent BioSolutions Inc. (US:EBS) valued at $1,277,270 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 118,311 shares of Emergent BioSolutions Inc.. This represents a change in shares of 30.07% during the quarter. The current value of the position is $1,220,332 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)
2026-05-15 2026-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 153,888 35,577 30.07 1,277 -12.65 0.0000
2026-02-17 2025-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 118,311 -69,863 -37.13 1,462 -11.87 0.0001
2025-11-13 2025-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 188,174 19,657 11.66 1,660 54.33 0.0001
2025-08-14 2025-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 168,517 5,054 3.09 1,075 35.39 0.0001
2025-05-12 2025-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 163,463 22,068 15.61 794 -41.23 0.0001
2025-02-13 2024-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 141,395 12,296 9.52 1,352 25.44 0.0001
2024-11-13 2024-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 129,099 14,446 12.60 1,078 37.90 0.0001
2024-08-13 2024-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 114,653 103,041 887.37 782 2,593.10 0.0001
2024-05-13 2024-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 11,612 378 3.36 29 11.54 0.0000
2024-02-13 2023-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 11,234 -116,250 -91.19 27 -94.00 0.0000
2023-11-13 2023-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 127,484 58,431 84.62 433 -14.60 0.0000
2023-08-11 2023-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 69,053 30,666 79.89 508 27.71 0.0000
2023-08-11 2023-03-31 13F/A-1 EMERGENT BIOSOLUTIONS COM 29089Q105 38,387 -1,400 -3.52 398 -15.35 0.0000
2023-05-11 2023-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 38,387 -1,400 398 0.0000
2023-02-13 2022-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 39,787 8,526 27.27 470 -28.51 0.0000
2022-11-10 2022-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 31,261 -189 -0.60 656 -32.86 0.0001
2022-08-12 2022-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 31,450 -82 -0.26 977 -24.50 0.0001
2022-05-13 2022-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 31,532 -715,938 -95.78 1,294 -96.02 0.0001
2022-02-14 2021-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 747,470 70,148 10.36 32,492 -4.19 0.0024
2022-02-14 2021-09-30 13F/A-1 EMERGENT BIOSOLUTIONS COM 29089Q105 677,322 -8,477 -1.24 33,913 -21.50 0.0027
2021-11-15 2021-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 677,322 -8,477 33,913 0.0027
2021-08-13 2021-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 685,799 431,148 169.31 43,199 82.58 0.0034
2021-05-14 2021-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 254,651 -188,833 -42.58 23,660 -40.46 0.0020
2021-02-08 2020-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 443,484 5,011 1.14 39,736 -12.30 0.0035
2020-11-13 2020-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 438,473 236,055 116.62 45,308 183.07 0.0046
2020-08-24 2020-06-30 13F/A-1 EMERGENT BIOSOLUTIONS COM 29089Q105 202,418 202,362 361,360.71 16,006 533,433.33 0.0018
2020-08-13 2020-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 202,418 202,362 16,006 393.2206
2020-05-14 2020-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 56 -290,225 -99.98 3 -99.98 0.0000
2020-02-07 2019-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 290,281 157,481 118.59 15,661 125.57 0.0017
2019-11-13 2019-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 132,800 -231,499 -63.55 6,943 -60.55 0.0008
2019-08-13 2019-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 364,299 -148,982 -29.03 17,599 -32.13 0.0021
2019-05-13 2019-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 513,281 -5,064 -0.98 25,931 -15.61 0.0031
2019-02-13 2018-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 518,345 99,170 23.66 30,727 11.35 0.0042
2018-11-09 2018-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 419,175 128,668 44.29 27,594 88.12 0.0031
2018-08-10 2018-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 290,507 191,248 192.68 14,668 180.67 0.0017
2018-05-14 2018-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 99,259 -24,563 -19.84 5,226 -9.18 0.0006
2018-02-12 2017-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 123,822 -36,625 -22.83 5,754 -11.34 0.0007
2017-11-13 2017-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 160,447 -58,254 -26.64 6,490 -12.49 0.0008
2017-08-29 2017-06-30 13F/A-1 EMERGENT BIOSOLUTIONS COM 29089Q105 218,701 -70,129 -24.28 7,416 -11.59 0.0009
2017-08-11 2017-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 218,701 -70,129 7,416
2017-05-11 2017-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 288,830 482 0.17 8,388 -11.42 0.0011
2017-02-10 2016-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 288,348 81,898 39.67 9,469 45.48 0.0013
2016-11-14 2016-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 206,450 -297,797 -59.06 6,509 -54.09 0.0009
2016-08-11 2016-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 504,247 -38,494 -7.09 14,179 -28.13 0.0019
2016-05-16 2016-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 542,741 -5,042 -0.92 19,729 -9.98 0.0027
2016-02-12 2015-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 547,783 -4,958 -0.90 21,917 39.17 0.0029
2015-11-10 2015-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 552,741 3,500 0.64 15,748 -12.98 0.0022
2015-08-25 2015-06-30 13F/A-1 EMERGENT BIOSOLUTIONS COM 29089Q105 549,241 3,000 0.55 18,097 15.19 0.0023
2015-08-13 2015-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 549,241 18,097
2015-05-14 2015-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 546,241 4,800 0.89 15,710 6.56 0.0020
2015-02-17 2014-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 541,441 -30,300 -5.30 14,743 21.00 0.0019
2014-11-14 2014-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 571,741 -10,072 -1.73 12,184 -6.76 0.0017
2014-08-14 2014-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 581,813 -18,549 -3.09 13,068 -13.86 0.0018
2014-05-15 2014-03-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 600,362 172,137 40.20 15,171 54.10 0.0021
2014-02-13 2013-12-31 13F EMERGENT BIOSOLUTIONS COM 29089Q105 428,225 80,341 23.09 9,845 48.56 0.0014
2013-11-14 2013-09-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 347,884 -42,324 -10.85 6,627 17.77 0.0010
2013-09-24 2013-06-30 13F/A-1 EMERGENT BIOSOLUTIONS COM 29089Q105 390,208 390,208 5,627 0.0009
2013-08-14 2013-06-30 13F EMERGENT BIOSOLUTIONS COM 29089Q105 390,208 5,627 0.0009
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.