STOCK TITAN

Director at Disc Medicine (NASDAQ: IRON) granted 6,212 stock options at $70.79

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Disc Medicine, Inc. director Kevin Bitterman received a grant of stock options covering 6,212 shares of common stock. The options have an exercise price of $70.79 per share and expire on June 17, 2036.

The options vest on the earlier of the company’s 2027 annual stockholders’ meeting or the one-year anniversary of the grant date, subject to his continued service. Footnotes state that proceeds from any sale of shares issued upon exercise will be transferred to Atlas Venture Life Science Advisors, LLC, and Bitterman disclaims ownership of the securities except for any pecuniary interest.

Positive

  • None.

Negative

  • None.
Insider Bitterman Kevin
Role null
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 6,212 $0.00 --
Holdings After Transaction: Stock Option (Right to Buy) — 6,212 shares (Direct, null)
Footnotes (1)
  1. The shares underlying this option vest upon the first to occur of (i) the date of the Company's 2027 annual meeting of its stockholders, or (ii) the one-year anniversary of the grant date, subject to the Reporting Person's continued service on such vesting date. This option was granted to the Reporting Person, a director of the Issuer. The proceeds of any sale of shares of common stock issued to the Reporting Person upon exercise of this option will be transferred to Atlas Venture Life Science Advisors, LLC and as such, the Reporting Person disclaims ownership of such securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, except to the extent of his pecuniary interest therein, if any.
Option grant size 6,212 options Number of common shares underlying the stock option grant
Exercise price $70.79 per share Conversion or exercise price of the stock options
Expiration date June 17, 2036 Option expiration date for the grant
Post-transaction derivative holdings 6,212 options Total derivative securities following the reported grant
Stock Option (Right to Buy) financial
"security_title: Stock Option (Right to Buy)"
exercise price financial
"conversion_or_exercise_price: 70.7900"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
Section 16 regulatory
"for purposes of Section 16 of the Securities Exchange Act of 1934"
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.
pecuniary interest financial
"except to the extent of his pecuniary interest therein, if any"
annual meeting financial
"the date of the Company's 2027 annual meeting of its stockholders"
A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.
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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a 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). See Instruction 10.
1. Name and Address of Reporting Person*
Bitterman Kevin

(Last)(First)(Middle)
C/O DISC MEDICINE, INC.
321 ARSENAL STREET, SUITE 101

(Street)
WATERTOWN MASSACHUSETTS 02472

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Disc Medicine, Inc. [ IRON ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/18/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$70.7906/18/2026A6,212 (1)06/17/2036Common Stock6,212$06,212D(2)
Explanation of Responses:
1. The shares underlying this option vest upon the first to occur of (i) the date of the Company's 2027 annual meeting of its stockholders, or (ii) the one-year anniversary of the grant date, subject to the Reporting Person's continued service on such vesting date.
2. This option was granted to the Reporting Person, a director of the Issuer. The proceeds of any sale of shares of common stock issued to the Reporting Person upon exercise of this option will be transferred to Atlas Venture Life Science Advisors, LLC and as such, the Reporting Person disclaims ownership of such securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, except to the extent of his pecuniary interest therein, if any.
/s/ Ommer Chohan, Attorney-in-Fact06/23/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Disc Medicine (IRON) report for Kevin Bitterman?

Disc Medicine reported a stock option grant to director Kevin Bitterman for 6,212 underlying common shares. The options are a compensation-related award rather than an open-market trade and give the right to buy shares at a set exercise price.

What are the key terms of Kevin Bitterman’s stock options at Disc Medicine (IRON)?

The grant covers 6,212 shares of Disc Medicine common stock with an exercise price of $70.79 per share. The options expire on June 17, 2036, providing a long-term right to purchase shares at that fixed price.

When do Kevin Bitterman’s Disc Medicine (IRON) options vest?

The options vest on the first to occur of the company’s 2027 annual stockholders’ meeting or one year after the grant date. Vesting is conditioned on Bitterman’s continued service with the company through the applicable vesting date.

Who benefits economically from sales of shares under Kevin Bitterman’s Disc Medicine (IRON) options?

Footnotes explain that proceeds from any sale of common shares issued upon exercise will be transferred to Atlas Venture Life Science Advisors, LLC. Bitterman disclaims ownership of these securities except to the extent of any pecuniary interest he may have.

Is Kevin Bitterman’s Disc Medicine (IRON) Form 4 transaction a stock purchase or sale?

No, the Form 4 reports a grant of stock options, classified as an acquisition of a derivative security. It is a compensation award, not an open-market stock purchase or sale, and does not itself involve trading Disc Medicine common shares.