Star Bulk CSO granted 17,200 restricted shares

Star Bulk Carriers Corp. reported that Chief Strategy Officer Charis Plakantonaki acquired 17,200 common shares through a grant of restricted stock at no cash cost on June 12, 2026.

Rhea-AI Filing Summary

Star Bulk Carriers Corp. reported that Chief Strategy Officer Charis Plakantonaki acquired 17,200 common shares through a grant of restricted stock at no cash cost on June 12, 2026. Following this award, her direct holdings increased to 77,428 common shares.

The restricted stock vests in stages: 50% on November 20, 2026, 25% on May 20, 2027, and the remaining 25% on May 20, 2029, subject to the terms and conditions of the restricted stock agreement. The Form 4 was filed late due to technical issues.

Insider Trade Summary

Grant/Award: 17,200 shares

Grant/Award 1 txn

Insider Plakantonaki Charis

Role Chief Strategy Officer

Type	Security	Shares	Price	Value
Grant/Award	Common shares par value $ 0.01 per share	17,200	$0.00	$0.00

Holdings After Transaction: Common shares par value $ 0.01 per share — 77,428 shares (Direct)

Footnotes (2)

1. F1. Represents a grant of shares of restricted stock issued pursuant to a restricted stock agreement dated and effective June 12, 2026. Fifty per cent (50 %) vest on November 20, 2026, twenty five per cent ( 25%) vest on May 20 2027 and the remaining twenty five per cent (25%) vest on May 20, 2029 subject to the terms and conditions of the agreement.
2. F2. This Form 4 is being filed late due to a delay caused by technical issues.

Key Figures

Restricted stock grant: 17,200 shares Price per granted share: $0.00 per share Post-transaction holdings: 77,428 shares +3 more

6 metrics

Restricted stock grant 17,200 shares Common shares granted June 12, 2026

Price per granted share $0.00 per share Reported transaction price for restricted stock

Post-transaction holdings 77,428 shares Direct ownership after grant

Initial vesting tranche 50% Vests on November 20, 2026

Second vesting tranche 25% Vests on May 20, 2027

Final vesting tranche 25% Vests on May 20, 2029

Key Terms

restricted stock, vesting, Form 4, par value $ 0.01 per share

4 terms

restricted stock financial

"Represents a grant of shares of restricted stock issued pursuant to a restricted stock agreement"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

vesting financial

"Fifty per cent (50 %) vest on November 20, 2026, twenty five per cent ( 25%) vest on May 20 2027"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

Form 4 regulatory

"This Form 4 is being filed late due to a delay caused by technical issues."

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.

par value $ 0.01 per share financial

"Common shares par value $ 0.01 per share"

FAQ

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

What insider transaction did SBLK executive Charis Plakantonaki report?

Charis Plakantonaki reported receiving a grant of 17,200 common shares of Star Bulk Carriers as restricted stock. The grant was a compensation award at no cash cost, increasing her direct ownership and subject to a multi-year vesting schedule under a restricted stock agreement.

How many Star Bulk Carriers (SBLK) shares does the CSO hold after this grant?

After the restricted stock grant, Chief Strategy Officer Charis Plakantonaki directly holds 77,428 common shares of Star Bulk Carriers. This total includes the newly granted 17,200 restricted shares, which will vest over time according to the agreement’s specified schedule and conditions.

What is the vesting schedule for the 17,200 restricted SBLK shares?

The 17,200 restricted shares vest in three stages: 50% on November 20, 2026, 25% on May 20, 2027, and the remaining 25% on May 20, 2029. Vesting remains subject to the terms and conditions outlined in the restricted stock agreement dated June 12, 2026.

Was the SBLK insider transaction an open-market purchase or a compensation award?

The transaction was a compensation-related grant or award, not an open-market purchase. The 17,200 common shares were issued as restricted stock at a reported price per share of $0.00, reflecting an equity-based incentive rather than a discretionary market buy by the executive.

Why was the Star Bulk Carriers (SBLK) Form 4 filed late?

The Form 4 was filed late due to technical issues, according to the footnote. This means the reporting delay was attributed to filing-related problems rather than an attempt to conceal or postpone disclosure of the restricted stock grant to the Chief Strategy Officer.

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

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Accepted by SEC EDGAR 06/17/2026 - 09:59 AM 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^*

Plakantonaki Charis

(Last) (First) (Middle)

57 PANAGIOTOU ANAGNOSTOPOULOU

(Street)

ATHENS 10672

(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 Strategy Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026

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	06/12/2026(2)		A(1)		17,200	A	$0	77,428	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:

1. Represents a grant of shares of restricted stock issued pursuant to a restricted stock agreement dated and effective June 12, 2026. Fifty per cent (50 %) vest on November 20, 2026, twenty five per cent ( 25%) vest on May 20 2027 and the remaining twenty five per cent (25%) vest on May 20, 2029 subject to the terms and conditions of the agreement.

2. This Form 4 is being filed late due to a delay caused by technical issues.

	Charis Plakantonaki	06/17/2026
	** 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)