Primecap Management’s Mereo BioPharma MREO Stock Holding History

Primecap Management’s Portfolio MREO Stock Details MREO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2024 Q4	–	Sell	-54,000	Closed	-$222K	–	336
2024 Q3	$222K	Hold	54,000	–	–	﹤0.01%	335
2024 Q2	$194K	Hold	54,000	–	–	﹤0.01%	331
2024 Q1	$178K	Hold	54,000	–	–	﹤0.01%	333
2023 Q4	$125K	Sell	54,000 -25,000	-32%	-$47.8K	﹤0.01%	334
2023 Q3	$102K	Sell	79,000 -78,700	-50%	-$104K	﹤0.01%	331
2023 Q2	$208K	Sell	157,700 -138,830	-47%	-$161K	﹤0.01%	326
2023 Q1	$210K	Sell	296,530 -700	-0.2%	-$630	﹤0.01%	329
2022 Q4	$223K	Sell	297,230 -17,530	-6%	-$14.4K	﹤0.01%	330
2022 Q3	$271K	Sell	314,760 -6,900	-2%	-$8.44K	﹤0.01%	332
2022 Q2	$360K	Sell	321,660 -9,240	-3%	-$7.16K	﹤0.01%	336
2022 Q1	$371K	Sell	330,900 -1,300	-0.4%	-$1.68K	﹤0.01%	336
2021 Q4	$532K	Sell	332,200 -7,400	-2%	-$14.8K	﹤0.01%	337
2021 Q3	$822K	Sell	339,600 -149,338	-31%	-$395K	﹤0.01%	333
2021 Q2	$1.55M	Sell	488,938 -162	-0%	-$544	﹤0.01%	318
2021 Q1	$1.65M	Hold	489,100	–	–	﹤0.01%	313
2020 Q4	$1.75M	Hold	489,100	–	–	﹤0.01%	304
2020 Q3	$1.28M	Hold	489,100	–	–	﹤0.01%	297
2020 Q2	$1.5M	Sell	489,100 -54,275	-10%	-$95.8K	﹤0.01%	283
2020 Q1	$560K	Sell	543,375 -58,387	-10%	-$101K	﹤0.01%	283
2019 Q4	$1.97M	Sell	601,762 -81,594	-12%	-$208K	﹤0.01%	274
2019 Q3	$1.98M	Sell	683,356 -12,754	-2%	-$38.6K	﹤0.01%	274
2019 Q2	$1.67M	Buy	+696,110	New	+$3.04M	﹤0.01%	281

Other funds holding MREO

Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return

RCMNY

Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return

RSCM

Rock Springs Capital Management Baltimore, Maryland $2.05B AUM 161.37% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

Mangrove Partners Greenwich, Connecticut $1.52B AUM 36.54% 1-Year Est. Return

Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return

FLSM

Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return

Alkeon Capital Management New York $74.1B AUM 71.18% 1-Year Est. Return

6CM

683 Capital Management New York $2.04B AUM 94.26% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Primecap Management's MREO Position: Q4 2024 in Review

Primecap Management sold out of Mereo BioPharma (MREO) in Q4 2024, closing a stake of 54,000 shares — an estimated $222K sold.

Primecap Management first reported a position in MREO in Q2 2019 and held it in 22 quarters. The position peaked at $1.98M in Q3 2019. 91 funds tracked by Wall St. Rank hold MREO as of Q4 2024.

Primecap Management reported no remaining Mereo BioPharma position as of Q4 2024 after selling out during the quarter.
Primecap Management sold 54,000 Mereo BioPharma shares in Q4 2024, an estimated $222K.
Primecap Management first reported a position in Mereo BioPharma in Q2 2019 and held it in 22 quarters.
Primecap Management's Mereo BioPharma position peaked at $1.98M in Q3 2019.
91 funds tracked by Wall St. Rank held Mereo BioPharma as of Q4 2024.

Based on Primecap Management's 13F filing for Q4 2024, filed 10 Feb 2025.