ADAR1 Capital Management, LLC - Apr 9, 2025 Form 4 Insider Report for Keros Therapeutics, Inc. (KROS)

Role
10%+ Owner
Signature
ADAR1 Capital Management, LLC, By /s/ Daniel Schneeberger, Manager
Stock symbol
KROS
Transactions as of
Apr 9, 2025
Transactions value $
$9,464,512
Form type
4
Date filed
4/11/2025, 09:57 PM
Previous filing
Apr 11, 2025
Next filing
Jun 12, 2025

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction KROS Common Stock Purchase $174K +18.6K +0.53% $9.40 3.49M Apr 9, 2025 By ADAR1 Partners, LP F1, F2, F8
transaction KROS Common Stock Purchase $154K +16.4K +2.25% $9.40 744K Apr 9, 2025 By Spearhead Insurance Solutions IDF, LLC F1, F3, F8
transaction KROS Common Stock Purchase $3.2M +325K +9.3% $9.86 3.82M Apr 9, 2025 By ADAR1 Partners, LP F1, F4, F8
transaction KROS Common Stock Purchase $5.17M +500K +13.09% $10.33 4.32M Apr 9, 2025 By ADAR1 Partners, LP F1, F8
transaction KROS Common Stock Purchase $768K +74.3K +1.72% $10.33 4.39M Apr 9, 2025 By ADAR1 Partners, LP F1, F8
holding KROS Common Stock 255K Apr 9, 2025 By ADAR1 SPV I, LP F1, F8

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 KROS Cash-Settled Total Return Swaps Other -325K -34.23% 624K Apr 9, 2025 Common Stock 325K By ADAR1 Partners, LP F1, F5, F8
transaction KROS Cash-Settled Total Return Swaps Other -500K -80.09% 124K Apr 9, 2025 Common Stock 500K By ADAR1 Partners, LP F1, F6, F8
transaction KROS Cash Settled Total Return Swaps Other -74.3K -59.79% 50K Apr 9, 2025 Common Stock 74.3K By ADAR1 Partners, LP F1, F7, F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 As the investment manager of ADAR1 Partners, LP and ADAR1 SPV I, LP and as the sub-advisor of Spearhead Insurance Solutions IDF, LLC, ADAR1 Capital Management, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, ADAR1 SPV I, LP and Spearhead Insurance Solutions IDF, LLC. As the general partner of ADAR1 Partners, LP and ADAR1 SPV I, LP, ADAR1 Capital Management GP, LLC may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP and ADAR1 SPV I, LP. As the manager of ADAR1 Capital Management, LLC and ADAR1 Capital Management GP, LLC, Mr. Schneeberger may be deemed to indirectly beneficially own securities held by ADAR1 Partners, LP, Spearhead Insurance Solutions IDF, LLC, and ADAR1 SPV I, LP.
F2 The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.21 to $9.56, inclusive.
F3 The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.21 to $9.56, inclusive.
F4 The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.13 to $10.60, inclusive.
F5 In connection with the purchase of 325,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 325,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 624,333 shares.
F6 In connection with the purchase of 500,000 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 500,000 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 124,333 shares.
F7 In connection with the purchase of 74,333 securities reported as being purchased in Table 1, ADAR1 Partners, LP and the counterparty to the cash-settled total equity swaps previously reported agreed to reduce the number of notional shares of Common Stock of the Issuer in the applicable basket by a corresponding number of 74,333 shares. As a result, the aggregate number of notional shares of Common Stock of the Issuer in the applicable basket after giving effect to such transactions is 50,000 shares.
F8 For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.