EcoR1 Capital, LLC

Holdings History for iTeos Therapeutics, Inc. - Common stock, par value $0.001 per share (ITOS)

Symbol: ITOS
Investment type: Equity / Common stock, par value $0.001 per share
Latest Disclosed Shares Owned: 10,688,978 shares
Security Ownership %: 28%

Shares, Excluding Options vs Price

Value, Excluding Options

EcoR1 Capital, LLC ownership in iTeos Therapeutics, Inc. Common stock, par value $0.001 per share (ITOS)

16 May 2025 - EcoR1 Capital, LLC has filed an SCHEDULE 13D form with the Securities and Exchange Commission (SEC) disclosing ownership of 10,688,978 shares of iTeos Therapeutics, Inc. Common stock, par value $0.001 per share (ITOS). This represents 28% ownership of the company. In their previous filing dated 13 May 2025, EcoR1 Capital, LLC had reported owning 5,730,000 shares, indicating an increase of +87%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
EcoR1 Capital, LLC	28%	+87%	$78,563,988	10,688,978	+4,958,978	+87%	$7.35	13D	15 May 2025	16 May 2025, 19:22
EcoR1 Capital, LLC	15%	+114%	$42,115,500	5,730,000	+3,073,360	+116%	$7.35	13G/A	13 May 2025	13 May 2025, 19:10
EcoR1 Capital, LLC	6.9%		$19,526,304	2,656,640			$7.35	13G	01 May 2025	08 May 2025, 19:43

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
30 Sep 2025		-6.3%	$0	0	-10,688,978	-100%	$10.15	Q3 2025
30 Jun 2025	6.3%	+6.3%	$106,569,111	10,688,978	+10,688,978	NEW	$9.97	Q2 2025
31 Dec 2024		-0.56%	$0	0	-1,608,616	-100%	$10.15	Q4 2024
30 Sep 2024	0.56%	-0.57%	$16,423,969	1,608,616	-1,641,219	-51%	$10.21	Q3 2024
30 Jun 2024	1.5%	+0.47%	$48,227,551	3,249,835	+1,250,586	+63%	$14.84	Q2 2024
31 Mar 2024	0.69%	+0.31%	$27,269,756	1,999,249	+884,227	+79%	$13.64	Q1 2024
31 Dec 2023	0.32%	+0.32%	$12,209,491	1,115,022	+1,115,022	NEW	$10.95	Q4 2023
30 Jun 2023		-0%	$0	0	-1,300	-100%	$10.15	Q2 2023
31 Mar 2023	0%	-0.02%	$17,693	1,300	-39,180	-97%	$13.61	Q1 2023
31 Dec 2022	0.02%	0%	$790,574	40,480	0		$19.53	Q4 2022
30 Sep 2022	0.02%	-0.13%	$771,000	40,480	-239,519	-86%	$19.05	Q3 2022
30 Jun 2022	0.2%	+0.15%	$5,768,000	279,999	+207,178	+285%	$20.60	Q2 2022
31 Mar 2022	0.07%	-1.2%	$2,343,000	72,821	-1,230,336	-94%	$32.17	Q1 2022
31 Dec 2021	1.9%	0%	$60,675,000	1,303,157	0		$46.56	Q4 2021
30 Sep 2021	1.2%	+0.25%	$35,185,000	1,303,157	+267,293	+26%	$27.00	Q3 2021
30 Jun 2021	1%	+0.75%	$26,570,000	1,035,864	+775,864	+298%	$25.65	Q2 2021
31 Mar 2021	0.4%	0%	$8,887,000	260,000	0		$34.18	Q1 2021
31 Dec 2020	0.49%	0%	$8,793,000	260,000	0		$33.82	Q4 2020
30 Sep 2020	0.46%	+0.46%	$6,414,000	260,000	+260,000	NEW	$24.67	Q3 2020

* 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.