Star Bulk (SBLK) COO sells 39,914 common shares in market trades

Rhea-AI Filing Summary

Star Bulk Carriers Corp. Chief Operating Officer Nikolaos Reskos reported open-market sales of company common shares. On May 20 and 21, 2026, he sold a total of 39,914 shares at prices between $26.55 and $27.29 per share. Following these transactions, he directly holds 367,775 common shares of Star Bulk.

Insider Trade Summary 10b5-1

Net Seller: 39,914 shares ($1,081,917)

Net Sell 2 txns

Insider Reskos Nikolaos

Role Chief Operating Officer

Sold 39,914 shs ($1.08M)

Type	Security	Shares	Price	Value
Sale	Common shares, par value $0.01 per share	30,000	$27.29	$819K
Sale	Common shares, par value $0.01 per share	9,914	$26.55	$263K

Holdings After Transaction: Common shares, par value $0.01 per share — 367,775 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold May 21, 2026: 30,000 shares at $27.29 Shares sold May 20, 2026: 9,914 shares at $26.55 Total shares sold: 39,914 shares +1 more

4 metrics

Shares sold May 21, 2026 30,000 shares at $27.29 Open-market sale of common shares

Shares sold May 20, 2026 9,914 shares at $26.55 Open-market sale of common shares

Total shares sold 39,914 shares Net shares disposed across two transactions

Post-transaction holdings 367,775 shares Directly held common shares after last sale

Key Terms

open-market sale, transaction code "S", Form 4, Common shares, par value $0.01 per share

4 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

transaction code "S" regulatory

"transaction_code": "S""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common shares, par value $0.01 per share financial

"security_title": "Common shares, par value $0.01 per share""

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Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

Reskos Nikolaos

(Last) (First) (Middle)

40, AG KONSTANTINOU

(Street)

MAROUSI 15124

(City) (State) (Zip)

GREECE

(Country)

2. Issuer Name and Ticker or Trading Symbol
Star Bulk Carriers Corp. [ SBLK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

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
Common shares, par value $0.01 per share	05/20/2026		S		9,914	D	$26.55	397,775	D
Common shares, par value $0.01 per share	05/21/2026		S		30,000	D	$27.29	367,775	D

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

Explanation of Responses:

Remarks:

Date of 10b5-1(c) is 01/26/2026

	Nikolaos Reskos	05/22/2026
	** 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)

FAQ

What insider transactions did SBLK COO Nikolaos Reskos report?

Star Bulk COO Nikolaos Reskos reported two open-market sales totaling 39,914 common shares. The transactions occurred on May 20 and 21, 2026, reflecting routine portfolio activity disclosed in a Form 4 insider trading report.

At what prices did the SBLK COO sell his Star Bulk shares?

Nikolaos Reskos sold Star Bulk common shares at prices between $26.55 and $27.29 per share. One transaction was at $26.55, and the other at $27.29, as disclosed in the Form 4 filing.

How many Star Bulk shares did the COO sell in total?

The COO sold a total of 39,914 Star Bulk common shares. This includes 9,914 shares sold on May 20, 2026, and 30,000 shares sold on May 21, 2026, both categorized as open-market sales.

How many Star Bulk shares does the COO hold after these sales?

After the reported sales, Nikolaos Reskos directly holds 367,775 Star Bulk common shares. This post-transaction holding figure comes directly from the Form 4 and shows his remaining equity stake in the company.

Were the SBLK insider transactions open-market sales or another type?

Both transactions were reported as open-market sales of Star Bulk common shares. The Form 4 uses transaction code "S" and describes them as "Sale in open market or private transaction," indicating straightforward share dispositions.