Star Bulk (SBLK) strategy chief sells 16,500 common shares

Rhea-AI Filing Summary

Star Bulk Carriers Corp. Chief Strategy Officer Charis Plakantonaki completed an open-market sale of 16,500 common shares on April 8, 2026 at $24.5564 per share. After this sale, she directly holds 60,228 common shares. The transaction is a straightforward insider sale of a portion of her stake.

Insider Trade Summary 10b5-1

Net Seller: 16,500 shares ($405,181)

Net Sell 1 txn

Insider Plakantonaki Charis

Role Chief Strategy Officer

Sold 16,500 shs ($405K)

Type	Security	Shares	Price	Value
Sale	Common shares par value $ 0.01 per share	16,500	$24.5564	$405K

Holdings After Transaction: Common shares par value $ 0.01 per share — 60,228 shares (Direct)

Footnotes (1)

Key Figures

Shares sold: 16,500 shares Sale price per share: $24.5564 per share Shares held after transaction: 60,228 shares +1 more

4 metrics

Shares sold 16,500 shares Open-market sale of common shares on April 8, 2026

Sale price per share $24.5564 per share Average price for the 16,500 common shares sold

Shares held after transaction 60,228 shares Direct ownership following the reported sale

Transaction code S Sale in open market or private transaction

Key Terms

open-market sale, non-derivative, transaction code "S", 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.

non-derivative financial

""transaction_type": "non-derivative""

transaction code "S" regulatory

""transaction_code": "S""

common shares par value $ 0.01 per share financial

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

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^*

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)
04/08/2026

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	04/08/2026		S		16,500	A	$24.5564	60,228	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:

	Charis Plakantonaki	04/16/2026
	** 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 transaction did Star Bulk (SBLK) report in this Form 4?

The filing shows Chief Strategy Officer Charis Plakantonaki executed an open-market sale of 16,500 Star Bulk common shares. The trade occurred on April 8, 2026 and involved the company’s common shares with a par value of $0.01 per share.

At what price did the Star Bulk (SBLK) insider sell shares?

The 16,500 common shares were sold at an average price of $24.5564 per share. This price reflects the reported transaction price per share for the open-market sale executed by the Chief Strategy Officer on April 8, 2026.

How many Star Bulk (SBLK) shares does the insider hold after the sale?

Following the reported transaction, Chief Strategy Officer Charis Plakantonaki directly owns 60,228 common shares of Star Bulk. This post-transaction figure comes from the Form 4’s “shares following transaction” field for her direct ownership position.

Was the Star Bulk (SBLK) insider transaction a buy or a sell?

The transaction was a sell. The Form 4 lists transaction code “S,” described as a sale in an open market or private transaction, and identifies the direction as a sell of non-derivative common shares.

Did the Star Bulk (SBLK) Form 4 include any derivative transactions?

No, the reported activity involved only non-derivative common shares. The derivativeSummary section is empty, and the transaction is classified as a non-derivative open-market sale with no options or other derivatives exercised or converted.