DSGN

Design Therapeutics, Inc.$12.89+0.09 (+0.66%)

Prev Close$12.81·MCap$772.8M·P/E—·Vol115.2K·Yield—

▲

Buys (12M)

$0.00

▼

Sells (12M)

$2.95M

◆

Net Activity

Net Seller

$2.95M

●

Active Insiders

last 12 mo

Over the past 12 months, insider activity at Design Therapeutics, Inc. (DSGN) has been exclusively selling, with 0 insider purchases totaling $0.00 and 1 insider sale totaling $2.95M. The most recent insider transaction was by William Arsani (Director), who sold $2.95M worth of shares on Aug 13, 2025. Design Therapeutics, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $772.8M.

DSGN Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 13, 2025	William Arsani	Director	Sell	562,627	$5.25	$2.95M0.9% OS	0
Dec 19, 2024	Prasad Deepa		Sell	3,806	$6.27	$23.9K	20,000
Aug 12, 2024	William Arsani		Sell	814,874	$4.25	$3.46M1.3% OS	0Exit
Mar 25, 2024	Berger Heather A.		Buy	1,300	$3.74	$4.9K	1,300
Mar 25, 2024	Schmid John P.		Buy	26,965	$3.70	$99.7K	26,965
Oct 2, 2023	LAPPE RODNEY W	Director	Buy	21,000	$2.35	$49.3K	133,024
Aug 30, 2023	Prasad Deepa	Director	Buy	12,000	$2.31	$27.7K	23,806+102%
Aug 30, 2023	William Arsani	Director	Buy	2,235,000	$2.40	$5.37M3.6% OS	3,000,000+292%
Dec 21, 2022	Siffert Joao MD	President and CEO	Buy	7,450	$8.39	$62.5K	132,619
Dec 20, 2022	George Simeon	Director	Buy	900,000	$8.42	$7.57M1.5% OS	6,526,476
Dec 12, 2022	LAPPE RODNEY W	Director	Buy	15,000	$7.96	$119.4K	112,024
Mar 22, 2022	William Arsani	Director	Buy	25,000	$18.99	$474.7K	2,797,501
Mar 22, 2022	Xu Stella	Director	Sell	590,880	$19.07	$11.27M1.0% OS	4,168,605
Sep 2, 2021	William Arsani	Director	Buy	40,000	$15.45	$618.0K	2,772,501
Apr 1, 2021	Cormorant Asset Management, LP		Buy	750,000	$20.00	$15.00M1.2% OS	5,114,844
Apr 1, 2021	Jeffries Sean	Chief Operating Officer	Buy	3,050	$20.00	$61.0K	3,050
Apr 1, 2021	LAPPE RODNEY W	Director	Buy	5,000	$20.00	$100.0K	97,024
Apr 1, 2021	Shah Pratik	Executive Chairperson	Buy	25,000	$20.00	$500.0K	25,000
Apr 1, 2021	SR One Capital Fund I Aggregator LP	10% Owner	Buy	250,000	$20.00	$5.00M	5,626,476
Apr 1, 2021	Thacker Justin	Vice President, Finance	Buy	17,500	$20.00	$350.0K	17,500
Apr 1, 2021	William Arsani	Director	Buy	700,000	$20.00	$14.00M1.1% OS	2,732,501+34%
Apr 1, 2021	Xu Stella	Director	Buy	10,000	$20.00	$200.0K	4,730,830

DSGN Insider Buying Activity

The following table shows recent insider purchases of Design Therapeutics, Inc. (DSGN) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Mar 25, 2024	Berger Heather A.		Buy	1,300	$3.74	$4.9K	1,300
Mar 25, 2024	Schmid John P.		Buy	26,965	$3.70	$99.7K	26,965
Oct 2, 2023	LAPPE RODNEY W	Director	Buy	21,000	$2.35	$49.3K	133,024
Aug 30, 2023	Prasad Deepa	Director	Buy	12,000	$2.31	$27.7K	23,806+102%
Aug 30, 2023	William Arsani	Director	Buy	2,235,000	$2.40	$5.37M3.6% OS	3,000,000+292%
Dec 21, 2022	Siffert Joao MD	President and CEO	Buy	7,450	$8.39	$62.5K	132,619
Dec 20, 2022	George Simeon	Director	Buy	900,000	$8.42	$7.57M1.5% OS	6,526,476
Dec 12, 2022	LAPPE RODNEY W	Director	Buy	15,000	$7.96	$119.4K	112,024
Mar 22, 2022	William Arsani	Director	Buy	25,000	$18.99	$474.7K	2,797,501
Sep 2, 2021	William Arsani	Director	Buy	40,000	$15.45	$618.0K	2,772,501
Apr 1, 2021	Cormorant Asset Management, LP		Buy	750,000	$20.00	$15.00M1.2% OS	5,114,844
Apr 1, 2021	Jeffries Sean	Chief Operating Officer	Buy	3,050	$20.00	$61.0K	3,050
Apr 1, 2021	LAPPE RODNEY W	Director	Buy	5,000	$20.00	$100.0K	97,024
Apr 1, 2021	Shah Pratik	Executive Chairperson	Buy	25,000	$20.00	$500.0K	25,000
Apr 1, 2021	SR One Capital Fund I Aggregator LP	10% Owner	Buy	250,000	$20.00	$5.00M	5,626,476
Apr 1, 2021	Thacker Justin	Vice President, Finance	Buy	17,500	$20.00	$350.0K	17,500
Apr 1, 2021	William Arsani	Director	Buy	700,000	$20.00	$14.00M1.1% OS	2,732,501+34%
Apr 1, 2021	Xu Stella	Director	Buy	10,000	$20.00	$200.0K	4,730,830

DSGN Insider Selling Activity

The following table shows recent insider sales of Design Therapeutics, Inc. (DSGN) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 13, 2025	William Arsani	Director	Sell	562,627	$5.25	$2.95M0.9% OS	0
Dec 19, 2024	Prasad Deepa		Sell	3,806	$6.27	$23.9K	20,000
Aug 12, 2024	William Arsani		Sell	814,874	$4.25	$3.46M1.3% OS	0Exit
Mar 22, 2022	Xu Stella	Director	Sell	590,880	$19.07	$11.27M1.0% OS	4,168,605