Disc Medicine director granted 6,212 stock options

Disc Medicine, Inc. director Donald William Nicholson received a grant of stock options, giving him the right to buy 6,212 shares of common stock at an exercise price of $70.79 per share.

Rhea-AI Filing Summary

Disc Medicine, Inc. director Donald William Nicholson received a grant of stock options, giving him the right to buy 6,212 shares of common stock at an exercise price of $70.79 per share. These options expire on June 17, 2036 and vest upon the earlier of the company’s 2027 annual stockholder meeting or the one-year anniversary of the grant date, as long as he continues serving through that vesting date. Following this grant, he holds stock options covering 6,212 shares directly.

Insider Trade Summary

Grant/Award: 6,212 shares

Grant/Award 1 txn

Insider Nicholson Donald William

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	6,212	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 6,212 contracts (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Options granted: 6,212 shares Exercise price: $70.79 per share Expiration date: June 17, 2036 +2 more

5 metrics

Options granted 6,212 shares Stock Option (Right to Buy) grant to director

Exercise price $70.79 per share Stock option strike price

Expiration date June 17, 2036 Option term end date

Underlying shares 6,212 shares Common stock underlying the option

Post-transaction option holdings 6,212 shares Total options following this grant

Key Terms

Stock Option (Right to Buy), exercise price, expiration date, grant, award, or other acquisition, +1 more

5 terms

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.

expiration date financial

"expiration_date: 2036-06-17T00:00:00.000Z"

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

vest financial

"The shares underlying this option vest upon the first to occur"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Disc Medicine (IRON) report for Donald William Nicholson?

Disc Medicine reported a stock option grant to director Donald William Nicholson for 6,212 shares. The options are a compensation-related award, not an open-market purchase or sale, and give him the right to buy common stock at a fixed exercise price.

How many Disc Medicine (IRON) shares are covered by Nicholson’s new stock options?

The new stock option grant covers 6,212 shares of Disc Medicine common stock. This represents the number of shares he can purchase under the option terms if the award vests and he chooses to exercise before expiration.

What is the exercise price and expiration date of Nicholson’s Disc Medicine options?

Nicholson’s options have an exercise price of $70.79 per share and expire on June 17, 2036. He can exercise them after vesting and before that expiration date, subject to the award’s other terms and conditions.

When do Donald Nicholson’s Disc Medicine (IRON) stock options vest?

The options vest on the earlier of Disc Medicine’s 2027 annual stockholder meeting or the one-year anniversary of the grant date. Vesting requires Nicholson to continue serving the company through that vesting date, as specified in the award footnote.

Is Nicholson’s Form 4 transaction in Disc Medicine stock a market buy or sell?

The Form 4 reflects a grant of stock options, not a market buy or sell of shares. It is classified as a grant or award acquisition, meaning it is part of his director compensation rather than an open-market trading decision.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/23/2026 - 05:00 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

Nicholson Donald William

(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)

X	Director		10% 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)

X	Form 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)
			Code	V	Amount	(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$70.79	06/18/2026		A		6,212		(1)	06/17/2036	Common Stock	6,212	$0	6,212	D

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.

	By: /s/ Rahul Khara, as Attorney-in-Fact	06/23/2026
	** Signature of Reporting Person	Date
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)