Star Bulk CSO sells 10,825 shares at about $29

Star Bulk Carriers Corp. (SBLK) reported that Chief Strategy Officer Charis Plakantonaki sold 10,825 common shares on 2026-08-14 in a sale classified as an open market or private transaction at a price of $28.9538 per share.

Rhea-AI Filing Summary

Star Bulk Carriers Corp. (SBLK) reported that Chief Strategy Officer Charis Plakantonaki sold 10,825 common shares on 2026-08-14 in a sale classified as an open market or private transaction at a price of $28.9538 per share. After this transaction, Plakantonaki directly holds 66,603 common shares of Star Bulk Carriers Corp.

Insider Trade Summary

Net Seller: 10,825 shares

Net Sell 1 txn

Insider Plakantonaki Charis

Role Chief Strategy Officer

Sold 10,825 shs ($313K)

Type	Security	Shares	Price	Value
Sale	Common shares par value $ 0.01 per share	10,825	$28.9538	$313K

Holdings After Transaction: Common shares par value $ 0.01 per share — 66,603 shares (Direct)

Key Figures

Shares sold: 10,825 shares Sale price: $28.9538 per share Shares held after transaction: 66,603 shares +1 more

4 metrics

Shares sold 10,825 shares Non-derivative common shares sold on 2026-08-14

Sale price $28.9538 per share Price for common shares sold on 2026-08-14

Shares held after transaction 66,603 shares Direct common share holdings following the 2026-08-14 sale

Net shares sold 10,825 shares Net sell direction per transaction summary

Key Terms

par value, open market, private transaction

3 terms

par value financial

"Common shares par value $ 0.01 per share"

Par value is the fixed amount printed on a bond or stock that represents its original value when issued. It’s like the face value of a coin or bill—what the issuer promises to pay back or the starting price of a stock—though it often doesn’t change with market prices. It matters because it helps determine certain financial details, like how much the company will pay back at maturity.

open market financial

"Sale in open market or private transaction"

An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

private transaction financial

"Sale in open market or private transaction"

A private transaction is the sale or transfer of securities, assets, or ownership stakes carried out directly between a small number of parties rather than on a public exchange. For investors it matters because these deals are less visible and often less liquid than public trades, so pricing can be harder to verify, the investment can be harder to sell quickly, and buyers or sellers may gain strategic advantages not available in open markets — like negotiated terms similar to a private garage sale versus a crowded marketplace.

FAQ

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

What insider transaction did SBLK report for Charis Plakantonaki on August 14, 2026?

Star Bulk Carriers Corp. reported that Charis Plakantonaki sold 10,825 common shares on 2026-08-14. The sale was reported as an open market or private transaction at a price of $28.9538 per share.

How many SBLK shares did Charis Plakantonaki sell, and at what price?

10,825 common shares of SBLK were sold by Charis Plakantonaki at $28.9538 per share. The transaction is categorized as a sale in open market or private transaction and involves non-derivative common shares.

What are Charis Plakantonaki’s SBLK holdings after the reported sale?

Following the sale, Charis Plakantonaki directly holds 66,603 common shares of SBLK. These holdings are reported as direct ownership of common shares with a par value of $0.01 per share.

Was the August 14, 2026 SBLK insider sale under a Rule 10b5-1 plan?

The filing shows the Rule 10b5-1 plan affirmation box as not checked. This indicates the 10,825-share sale by Charis Plakantonaki was not affirmed as executed under a Rule 10b5-1 trading plan in this report.

Did the SBLK Form 4 report any derivative transactions for Charis Plakantonaki?

No derivative transactions were reported; the filing shows 0 derivative transactions and an empty derivative positions summary. The only reported activity is the sale of 10,825 non-derivative common shares on 2026-08-14.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 08/18/2026 - 01:15 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^*

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)
08/14/2026

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	08/14/2026		S		10,825	D	$28.9538	66,603	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	08/18/2026
	** 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)