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Design Therapeutics, Inc.

DSGN Net buying
CIK 0001807120 #2568 in the set updated 21 Sep 2026
Bought (120 mo)
$62.19M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$17.71M
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$17.71M
8 of 8 sales
Net
+$44.48M
+$44.48M against sales at will

By person

14 insiders · 35 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Cormorant Asset Management, LP entity
Former 10% Owner
$15.00M (1)
—
+$15.00M
5,114,844
8.17%
$26.85M
—
William Arsani
Director
$20.47M (5)
$6.42M (3)
+$14.05M
6,982,629
11.16%
$36.66M
+109.8%
George Simeon
Director
$12.57M (4)
—
+$12.57M
12,152,952
19.42%
$63.80M
+116.0%
SR One Capital Fund I Aggregator LP entity
10% owner
$12.57M (4)
—
+$12.57M
6,526,476
10.43%
$34.26M
—
Xu Stella
Director
$200.00K (1)
$11.27M (4)
−$11.07M
13,581,610
21.70%
$71.30M
+43.8%
Shah Pratik
President, CEO and Chairperson
$500.00K (1)
—
+$500.00K
154,923
0.2476%
$813.35K
+519.7%
Thacker Justin
Vice President, Finance
$350.00K (1)
—
+$350.00K
17,500
0.0280%
$91.88K
—
LAPPE RODNEY W
Director
$268.71K (3)
—
+$268.71K
133,024
0.2126%
$698.38K
+44.6%
Schmid John P.
Director
$99.74K (2)
—
+$99.74K
26,965
0.0431%
$141.57K
—
Siffert Joao MD
President and CEO
$62.50K (2)
—
+$62.50K
132,619
0.2119%
$696.25K
+6.0%
Jeffries Sean
Chief Operating Officer
$61.00K (1)
—
+$61.00K
3,050
0.0049%
$16.01K
—
Berger Heather A.
Director
$4.87K (1)
—
+$4.87K
1,300
0.0021%
$6.83K
—
Prasad Deepa
Director
$27.67K (1)
$23.86K (1)
+$3.81K
20,000
0.0320%
$105.00K
—
Quan Venture Fund II, L.P. entity
10% owner
—
—
—
4,720,830
7.54%
$24.78M
—

Individual transactions

35
Insider
Date
Role
Action
Shares
Price
Amount
William Arsani
13 Aug 2025
Director
Sell indirect
217,627
$5.25
$1.14M
William Arsani
13 Aug 2025
Director
Sell indirect
345,000
$5.25
$1.81M
Prasad Deepa
18 Dec 2024
Director
Sell
3,806
$6.27
$23.86K
William Arsani
9 Aug 2024
Director
Sell indirect
814,874
$4.25
$3.46M
Berger Heather A.
25 Mar 2024
Director
Buy
1,300
$3.74
$4.87K
Schmid John P.
25 Mar 2024
Director
Buy indirect
17,809
$3.74
$66.61K
Schmid John P.
22 Mar 2024
Director
Buy indirect
9,156
$3.62
$33.13K
LAPPE RODNEY W
29 Sep 2023
Director
Buy
21,000
$2.35
$49.29K
William Arsani
29 Aug 2023
Director
Buy indirect
1,960,000
$2.44
$4.78M
Prasad Deepa
29 Aug 2023
Director
Buy
12,000
$2.31
$27.67K
William Arsani
28 Aug 2023
Director
Buy indirect
275,000
$2.15
$591.25K
SR One Capital Fund I Aggregator LP
20 Dec 2022
10% owner
Buy
40,000
$8.14
$325.43K
George Simeon
20 Dec 2022
Director
Buy indirect
40,000
$8.14
$325.43K
Siffert Joao MD
20 Dec 2022
President and CEO
Buy
6,300
$8.38
$52.76K
SR One Capital Fund I Aggregator LP
19 Dec 2022
10% owner
Buy
360,000
$8.63
$3.11M
George Simeon
19 Dec 2022
Director
Buy indirect
360,000
$8.63
$3.11M
Siffert Joao MD
19 Dec 2022
President and CEO
Buy
1,150
$8.47
$9.74K
SR One Capital Fund I Aggregator LP
16 Dec 2022
10% owner
Buy
500,000
$8.28
$4.14M
George Simeon
16 Dec 2022
Director
Buy indirect
500,000
$8.28
$4.14M
LAPPE RODNEY W
9 Dec 2022
Director
Buy
15,000
$7.96
$119.43K
Xu Stella
22 Mar 2022
Director
Sell indirect
1,455
$18.63
$27.11K
Xu Stella
21 Mar 2022
Director
Sell indirect
24,000
$19.01
$456.24K
William Arsani
21 Mar 2022
Director
Buy indirect
25,000
$18.99
$474.68K
Xu Stella
18 Mar 2022
Director
Sell indirect
13,200
$20.34
$268.49K
Xu Stella
18 Mar 2022
Director
Sell indirect
552,225
$19.04
$10.51M
William Arsani
31 Aug 2021
Director
Buy indirect
40,000
$15.45
$618.00K
Cormorant Asset Management, LP
30 Mar 2021
Former 10% Owner
Buy indirect
750,000
$20.00
$15.00M
William Arsani
30 Mar 2021
Director
Buy indirect
700,000
$20.00
$14.00M
Thacker Justin
30 Mar 2021
Vice President, Finance
Buy
17,500
$20.00
$350.00K
Shah Pratik
30 Mar 2021
Executive Chairperson
Buy
25,000
$20.00
$500.00K
LAPPE RODNEY W
30 Mar 2021
Director
Buy
5,000
$20.00
$100.00K
George Simeon
30 Mar 2021
Director
Buy indirect
250,000
$20.00
$5.00M
Xu Stella
30 Mar 2021
Director
Buy indirect
10,000
$20.00
$200.00K
SR One Capital Fund I Aggregator LP
30 Mar 2021
10% owner
Buy
250,000
$20.00
$5.00M
Jeffries Sean
30 Mar 2021
Chief Operating Officer
Buy indirect
3,050
$20.00
$61.00K

What was left out

Form 4 filings counted 92
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 3
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 8
Transactions with no price 0
Shares from compensation/vesting 26,708,686
Sales filed before the plan box existed 4
History held since 29 Mar 2021