683 Capital Management, LLC

Holdings History for Mereo BioPharma Group plc - Ordinary Shares, par value GBP 0.003 per share (MREO)

Symbol: MREO on Nasdaq
Investment type: Equity / Ordinary Shares, par value GBP 0.003 per share
Latest Disclosed Shares Owned: 65,083,815 shares
Security Ownership %: 8.2%

Shares, Excluding Options vs Price

Value, Excluding Options

683 Capital Management, LLC ownership in Mereo BioPharma Group plc Ordinary Shares, par value GBP 0.003 per share (MREO)

06 Jan 2026 - 683 Capital Management, LLC has filed an SCHEDULE 13G form with the Securities and Exchange Commission (SEC) disclosing ownership of 65,083,815 shares of Mereo BioPharma Group plc Ordinary Shares, par value GBP 0.003 per share (MREO). This represents 8.2% ownership of the company. This is the first filing by 683 Capital Management, LLC disclosing ownership of Mereo BioPharma Group plc Ordinary Shares, par value GBP 0.003 per share (MREO).

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
683 Capital Management, LLC	8.2%		$27,120,426	65,083,815			$0.42	13G	29 Dec 2025	06 Jan 2026, 17:38

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
31 Dec 2025	0.52%	+0.35%	$6,260,917	15,025,000	+10,150,000	+208%	$0.42	Q4 2025
30 Sep 2025	0.91%	+0.1%	$10,042,500	4,875,000	+525,000	+12%	$2.06	Q3 2025
30 Jun 2025	1.2%	-0.08%	$11,788,499	4,350,000	-285,000	-6.1%	$2.71	Q2 2025
31 Mar 2025	1.1%	+0.02%	$10,428,751	4,635,000	+85,000		$2.25	Q1 2025
31 Dec 2024	1.6%	-0.1%	$15,925,001	4,550,000	-299,800	-6.2%	$3.50	Q4 2024
30 Sep 2024	2%	-0.06%	$19,932,679	4,849,800	-150,200	-3%	$4.11	Q3 2024
30 Jun 2024	1.9%	-0.28%	$18,000,000	5,000,000	-750,000	-13%	$3.60	Q2 2024
31 Mar 2024	1.9%	-0.15%	$18,975,000	5,750,000	-450,000	-7.3%	$3.30	Q1 2024
31 Dec 2023	1.4%	+0.05%	$14,322,000	6,200,000	+200,000	+3.3%	$2.31	Q4 2023
30 Sep 2023	0.78%	+0.08%	$7,740,000	6,000,000	+600,000	+11%	$1.29	Q3 2023
30 Jun 2023	0.69%	+0.44%	$7,128,000	5,400,000	+3,400,000	+170%	$1.32	Q2 2023
31 Mar 2023	0.13%	+0.12%	$1,413,801	2,000,000	+1,875,000	+1500%	$0.71	Q1 2023
31 Dec 2022	0.01%	+0.01%	$93,750	125,000	+125,000	NEW	$0.75	Q4 2022

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.