Michel Detheux - 09 Jun 2025 Form 4 Insider Report for iTeos Therapeutics, Inc. (ITOS)

Role
Chief Executive Officer
Signature
/s/ Adi Osovsky, as Attorney-in-Fact
Issuer symbol
ITOS
Transactions as of
09 Jun 2025
Net transactions value
-$116,919
Form type
4
Filing time
11 Jun 2025, 21:01:31 UTC
Previous filing
06 Jun 2025
Next filing
18 Jul 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Detheux Michel Chief Executive Officer C/O ITEOS THERAPEUTICS, INC., 321 ARSENAL STREET, WATERTOWN /s/ Adi Osovsky, as Attorney-in-Fact 11 Jun 2025 0001816196

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ITOS Common Stock Options Exercise $36,120 +8,400 +6.2% $4.30 144,303 09 Jun 2025 Direct F1
transaction ITOS Common Stock Sale $84,252 -8,400 -5.8% $10.03 135,903 09 Jun 2025 Direct F1, F2
transaction ITOS Common Stock Options Exercise $188,693 +43,882 $4.30 43,882 09 Jun 2025 By MG3A F1, F3
transaction ITOS Common Stock Sale $440,136 -43,882 -100% $10.03 0 09 Jun 2025 By MG3A F1, F3, F4
transaction ITOS Common Stock Options Exercise $36,120 +8,400 +6.2% $4.30 144,303 10 Jun 2025 Direct F1
transaction ITOS Common Stock Sale $84,168 -8,400 -5.8% $10.02 135,903 10 Jun 2025 Direct F1, F5
transaction ITOS Common Stock Options Exercise $188,697 +43,883 $4.30 43,883 10 Jun 2025 By MG3A F1, F3
transaction ITOS Common Stock Sale $439,708 -43,883 -100% $10.02 0 10 Jun 2025 By MG3A F1, F3, F5
transaction ITOS Common Stock Options Exercise $77,400 +18,000 +13% $4.30 153,903 10 Jun 2025 Direct F6
transaction ITOS Common Stock Options Exercise $404,316 +94,027 $4.30 94,027 10 Jun 2025 By MG3A F3, F6

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ITOS Stock Option (Right to Buy) Options Exercise $0 -8,400 -24% $0.000000 26,400 09 Jun 2025 Common Stock 8,400 $4.30 Direct F1
transaction ITOS Stock Option (Right to Buy) Options Exercise $0 -43,882 -24% $0.000000 137,913 09 Jun 2025 Common Stock 43,882 $4.30 By MG3A F1, F3
transaction ITOS Stock Option (Right to Buy) Options Exercise $0 -8,400 -32% $0.000000 18,000 10 Jun 2025 Common Stock 8,400 $4.30 Direct F1
transaction ITOS Stock Option (Right to Buy) Options Exercise $0 -43,883 -32% $0.000000 94,030 10 Jun 2025 Common Stock 43,883 $4.30 By MG3A F1, F3
transaction ITOS Stock Option (Right to Buy) Options Exercise $0 -18,000 -100% $0.000000 0 10 Jun 2025 Common Stock 18,000 $4.30 Direct F6
transaction ITOS Stock Option (Right to Buy) Options Exercise $0 -94,027 -100% $0.000000 3 10 Jun 2025 Common Stock 94,027 $4.30 By MG3A F3, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2025.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.01 to $10.17, inclusive. The reporting person undertakes to provide to iTeos Therapeutics, Inc., any security holder of iTeos Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
F3 MG3A is a Belgian partnership of which the reporting person is the manager and the reporting person's spouse is the successor manager.
F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.98 to $10.17, inclusive. The reporting person undertakes to provide to iTeos Therapeutics, Inc., any security holder of iTeos Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
F5 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.99 to $10.06, inclusive. The reporting person undertakes to provide to iTeos Therapeutics, Inc., any security holder of iTeos Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
F6 This transaction involved a cash exercise of a stock option without a subsequent sale of the underlying shares of common stock.