Calamos Strategic Total Return Fund

CSQNASDAQFinancial Services● Active

$19.89

$-0.08(-0.40%)

Market Cap$3.2B

P/E Ratio—

52W High$20.82

52W Low$16.41

Avg Volume271K

Open$20.17

Beta1.31

Insider Trades Ownership Employees

Calamos Strategic Total Return Fund (CSQ) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · CSQ · as of Jun 9, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

0.40

Buy/Sell (by trades)

Overall sentiment

BEARISH

↑ Buy 29%Active transactions only · RSU vesting excluded71% Sell ↓

Calamos Strategic Total Return Fund insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 9, 2026

CSQ insider buying and selling by quarter

CSQ insider selling · CSQ insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

832K416K0

2021 Q3

2022 Q2

2022 Q3

2023 Q3

2023 Q4

2024 Q3

2024 Q4

2025 Q1

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 9, 2026

Recent insider transactions

CSQ executive sell shares · CSQ board member insider trading · CSQ insider trading SEC filing

Showing 61 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
Dec 6, 2023	Koudounis John S. VP	Sale	100	$14.17	$1K	13,310	Form 4
Dec 6, 2023	Koudounis John S. VP	Sale	1,191	$14.17	$17K	12,119	Form 4
Dec 6, 2023	Koudounis John S. VP	Sale	1,731	$14.18	$25K	10,388	Form 4
Dec 6, 2023	Koudounis John S. VP	Sale	9,476	$14.16	$134K	912	Form 4
Dec 6, 2023	Koudounis John S. VP	Sale	912	$14.19	$13K	0	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	35	$16.78	$587	13,410	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	187	$16.78	$3K	13,375	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	2,807	$16.80	$47K	13,188	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	615	$16.79	$10K	10,381	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	266	$16.77	$4K	9,766	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	300	$16.75	$5K	9,500	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	150	$16.74	$3K	9,200	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	100	$16.75	$2K	9,050	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	100	$16.75	$2K	8,950	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	300	$16.77	$5K	8,850	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	150	$16.76	$3K	8,550	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	600	$16.77	$10K	8,400	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	200	$16.77	$3K	7,800	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	200	$16.78	$3K	7,600	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	400	$16.79	$7K	7,400	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	3,100	$16.77	$52K	7,000	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	200	$16.77	$3K	3,900	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	500	$16.79	$8K	3,700	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	100	$16.77	$2K	3,200	Form 4
Feb 12, 2021	Koudounis John S. VP	Purchase	2,500	$16.75	$42K	3,100	Form 4

Koudounis John S.

Sale

Date

Dec 6

100

Price

$14.17

Value

$1K

View Form 4 on SEC.gov

Koudounis John S.

Sale

Date

Dec 6

1,191

Price

$14.17

Value

$17K

View Form 4 on SEC.gov

Koudounis John S.

Sale

Date

Dec 6

1,731

Price

$14.18

Value

$25K

View Form 4 on SEC.gov

Koudounis John S.

Sale

Date

Dec 6

9,476

Price

$14.16

Value

$134K

View Form 4 on SEC.gov

Koudounis John S.

Sale

Date

Dec 6

912

Price

$14.19

Value

$13K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

Price

$16.78

Value

$587

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

187

Price

$16.78

Value

$3K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

2,807

Price

$16.80

Value

$47K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

615

Price

$16.79

Value

$10K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

266

Price

$16.77

Value

$4K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

300

Price

$16.75

Value

$5K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

150

Price

$16.74

Value

$3K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

100

Price

$16.75

Value

$2K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

100

Price

$16.75

Value

$2K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

300

Price

$16.77

Value

$5K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

150

Price

$16.76

Value

$3K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

600

Price

$16.77

Value

$10K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

200

Price

$16.77

Value

$3K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

200

Price

$16.78

Value

$3K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

400

Price

$16.79

Value

$7K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

3,100

Price

$16.77

Value

$52K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

200

Price

$16.77

Value

$3K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

500

Price

$16.79

Value

$8K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

100

Price

$16.77

Value

$2K

View Form 4 on SEC.gov

Koudounis John S.

Purchase

Date

Feb 12

2,500

Price

$16.75

Value

$42K

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 3

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About CSQ insider trading

CSQ insider trades

Calamos Strategic Total Return Fund (CSQ) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including CSQ. Over the past 12 months, 0 insiders have filed transactions with the SEC. CSQ insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Calamos Strategic Total Return Fund's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

CSQ insider trading · 5 questions

The insiders of Calamos Strategic Total Return Fund (CSQ) include executives and directors such as CSQ, among others. Over the past 12 months, 0 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

CSQ board member insider tradingwho are CSQ insidersCSQ insider rosterCalamos Strategic Total Return Fund executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 9, 2026