InsiderClue
← All stocks

Sionna Therapeutics, Inc.

SION Net selling
CIK 0002036042 #3720 in the set updated 17 Sep 2026
Bought (12 mo)
$0.00
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$171.24M
$133.44M on a plan · $6.34M straight out of an exercise
Sold at will
$31.46M
45 of 147 sales
Net
−$171.24M
−$31.46M against sales at will

By person

9 insiders · 147 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
ORBIMED ADVISORS LLC entity
Director
—
$55.67M (20) scheduled
−$55.67M
2,469,959
5.46%
$110.80M
—
Thompson Peter A.
Director
—
$55.67M (20) scheduled
−$55.67M
2,469,959
5.46%
$110.80M
—
Booth Bruce
Director
—
$22.09M (50) scheduled
−$22.09M
686,567
1.52%
$30.80M
—
RA CAPITAL MANAGEMENT, L.P. entity
Director
—
$21.46M (44)
−$21.46M
159,033
0.3517%
$7.13M
—
TPG GP A, LLC entity
10% owner
—
$10.00M (1)
−$10.00M
6,494,962
14.37%
$291.36M
+849.0%
Cloonan Michael
President & CEO
—
$5.13M (9) scheduled
−$5.13M
547,343
1.21%
$24.55M
0.0%
Fitzpatrick Jennifer
Chief Legal Officer
—
$1.21M (3) scheduled
−$1.21M
0
0.0000%
$0.00
—
Atlas Venture Fund XI, L.P. entity
10% owner
—
—
—
3,694,020
8.17%
$165.71M
—
Ridloff Elena
CFO
—
—
—
38,532
0.0852%
$1.73M
−68.8%

Individual transactions

147
Insider
Date
Role
Action
Shares
Price
Amount
ORBIMED ADVISORS LLC
7 Jul 2026
Director
Sold on a plan indirect
85,918
$44.86
$3.85M
Thompson Peter A.
7 Jul 2026
Director
Sold on a plan indirect
85,918
$44.86
$3.85M
Fitzpatrick Jennifer
6 Jul 2026
Chief Legal Officer
Sold after exercise
10,250
$43.60
$446.86K
ORBIMED ADVISORS LLC
30 Jun 2026
Director
Sold on a plan indirect
115,844
$45.50
$5.27M
Thompson Peter A.
30 Jun 2026
Director
Sold on a plan indirect
115,844
$45.50
$5.27M
ORBIMED ADVISORS LLC
27 May 2026
Director
Sold on a plan indirect
101
$44.49
$4.49K
Thompson Peter A.
27 May 2026
Director
Sold on a plan indirect
101
$44.49
$4.49K
ORBIMED ADVISORS LLC
11 May 2026
Director
Sold on a plan indirect
184,639
$46.22
$8.53M
Thompson Peter A.
11 May 2026
Director
Sold on a plan indirect
184,639
$46.22
$8.53M
ORBIMED ADVISORS LLC
8 May 2026
Director
Sold on a plan indirect
59,767
$44.58
$2.66M
Thompson Peter A.
8 May 2026
Director
Sold on a plan indirect
59,767
$44.58
$2.66M
ORBIMED ADVISORS LLC
7 May 2026
Director
Sold on a plan indirect
48,546
$44.61
$2.17M
Thompson Peter A.
7 May 2026
Director
Sold on a plan indirect
48,546
$44.61
$2.17M
ORBIMED ADVISORS LLC
18 Apr 2026
Director
Sold on a plan indirect
2,948
$44.52
$131.24K
Thompson Peter A.
18 Apr 2026
Director
Sold on a plan indirect
2,948
$44.52
$131.24K
ORBIMED ADVISORS LLC
17 Apr 2026
Director
Sold on a plan indirect
52,397
$44.68
$2.34M
Thompson Peter A.
17 Apr 2026
Director
Sold on a plan indirect
52,397
$44.68
$2.34M
ORBIMED ADVISORS LLC
16 Apr 2026
Director
Sold on a plan indirect
226,906
$45.34
$10.29M
Thompson Peter A.
16 Apr 2026
Director
Sold on a plan indirect
226,906
$45.34
$10.29M
ORBIMED ADVISORS LLC
15 Apr 2026
Director
Sold on a plan indirect
235,863
$44.64
$10.53M
Thompson Peter A.
15 Apr 2026
Director
Sold on a plan indirect
235,863
$44.64
$10.53M
ORBIMED ADVISORS LLC
14 Apr 2026
Director
Sold on a plan indirect
47,814
$44.51
$2.13M
Thompson Peter A.
14 Apr 2026
Director
Sold on a plan indirect
47,814
$44.51
$2.13M
Fitzpatrick Jennifer
5 Mar 2026
Chief Legal Officer
Sold after exercise
10,250
$33.86
$347.02K
ORBIMED ADVISORS LLC
3 Feb 2026
Director
Sold on a plan indirect
29,063
$44.58
$1.30M
Thompson Peter A.
3 Feb 2026
Director
Sold on a plan indirect
29,063
$44.58
$1.30M
ORBIMED ADVISORS LLC
2 Feb 2026
Director
Sold on a plan indirect
1,890
$44.57
$84.24K
Thompson Peter A.
2 Feb 2026
Director
Sold on a plan indirect
1,890
$44.57
$84.24K
TPG GP A, LLC
22 Jan 2026
10% owner
Sell indirect
250,000
$40.00
$10.00M
Thompson Peter A.
24 Dec 2025
Director
Sold on a plan indirect
33,356
$44.55
$1.49M
ORBIMED ADVISORS LLC
24 Dec 2025
Director
Sold on a plan indirect
33,356
$44.55
$1.49M
Thompson Peter A.
19 Dec 2025
Director
Sold on a plan indirect
875
$44.49
$38.93K
ORBIMED ADVISORS LLC
19 Dec 2025
Director
Sold on a plan indirect
875
$44.49
$38.93K
Thompson Peter A.
18 Dec 2025
Director
Sold on a plan indirect
100
$44.49
$4.45K
ORBIMED ADVISORS LLC
18 Dec 2025
Director
Sold on a plan indirect
100
$44.49
$4.45K
Thompson Peter A.
17 Dec 2025
Director
Sold on a plan indirect
900
$44.50
$40.05K
ORBIMED ADVISORS LLC
17 Dec 2025
Director
Sold on a plan indirect
900
$44.50
$40.05K
Fitzpatrick Jennifer
5 Dec 2025
Chief Legal Officer
Sold after exercise
10,250
$40.52
$415.33K
Thompson Peter A.
26 Nov 2025
Director
Sold on a plan indirect
1,600
$44.49
$71.18K
ORBIMED ADVISORS LLC
26 Nov 2025
Director
Sold on a plan indirect
1,600
$44.49
$71.18K
Thompson Peter A.
25 Nov 2025
Director
Sold on a plan indirect
11,890
$44.60
$530.29K
ORBIMED ADVISORS LLC
25 Nov 2025
Director
Sold on a plan indirect
11,890
$44.60
$530.29K
Thompson Peter A.
24 Nov 2025
Director
Sold on a plan indirect
94,583
$44.54
$4.21M
ORBIMED ADVISORS LLC
24 Nov 2025
Director
Sold on a plan indirect
94,583
$44.54
$4.21M
RA CAPITAL MANAGEMENT, L.P.
21 Nov 2025
Director
Sell indirect
7,609
$39.50
$300.56K
RA CAPITAL MANAGEMENT, L.P.
21 Nov 2025
Director
Sell indirect
6,440
$39.50
$254.38K
RA CAPITAL MANAGEMENT, L.P.
21 Nov 2025
Director
Sell indirect
9,924
$39.50
$392.00K
RA CAPITAL MANAGEMENT, L.P.
21 Nov 2025
Director
Sell indirect
1,210
$39.50
$47.80K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
604
$40.50
$24.46K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
512
$40.50
$20.74K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
788
$40.50
$31.91K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
96
$40.50
$3.89K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
947
$39.89
$37.78K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
801
$39.89
$31.95K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
1,235
$39.89
$49.26K
RA CAPITAL MANAGEMENT, L.P.
20 Nov 2025
Director
Sell indirect
150
$39.89
$5.98K
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
9
$40.61
$365.49
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
8
$40.61
$324.88
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
12
$40.61
$487.32
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
2
$40.61
$81.22
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
14,325
$40.01
$573.14K
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
12,126
$40.01
$485.16K
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
18,684
$40.01
$747.55K
RA CAPITAL MANAGEMENT, L.P.
19 Nov 2025
Director
Sell indirect
2,276
$40.01
$91.06K
RA CAPITAL MANAGEMENT, L.P.
18 Nov 2025
Director
Sell indirect
2,092
$39.57
$82.78K
RA CAPITAL MANAGEMENT, L.P.
18 Nov 2025
Director
Sell indirect
1,770
$39.57
$70.04K
RA CAPITAL MANAGEMENT, L.P.
18 Nov 2025
Director
Sell indirect
2,728
$39.57
$107.95K
RA CAPITAL MANAGEMENT, L.P.
18 Nov 2025
Director
Sell indirect
332
$39.57
$13.14K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
331
$42.10
$13.94K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
280
$42.10
$11.79K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
433
$42.10
$18.23K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
53
$42.10
$2.23K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
10,707
$41.05
$439.52K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
9,063
$41.05
$372.04K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
13,964
$41.05
$573.22K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
1,701
$41.05
$69.83K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
13,734
$40.20
$552.11K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
11,626
$40.20
$467.37K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
17,913
$40.20
$720.10K
RA CAPITAL MANAGEMENT, L.P.
17 Nov 2025
Director
Sell indirect
2,182
$40.20
$87.72K
RA CAPITAL MANAGEMENT, L.P.
28 Oct 2025
Director
Sell indirect
10,476
$39.58
$414.64K
RA CAPITAL MANAGEMENT, L.P.
28 Oct 2025
Director
Sell indirect
17,118
$39.58
$677.53K
RA CAPITAL MANAGEMENT, L.P.
28 Oct 2025
Director
Sell indirect
31,392
$39.58
$1.24M
RA CAPITAL MANAGEMENT, L.P.
28 Oct 2025
Director
Sell indirect
3,624
$39.58
$143.44K
RA CAPITAL MANAGEMENT, L.P.
24 Oct 2025
Director
Sell indirect
107,941
$39.50
$4.26M
RA CAPITAL MANAGEMENT, L.P.
24 Oct 2025
Director
Sell indirect
66,672
$39.50
$2.63M
RA CAPITAL MANAGEMENT, L.P.
24 Oct 2025
Director
Sell indirect
122,271
$39.50
$4.83M
RA CAPITAL MANAGEMENT, L.P.
24 Oct 2025
Director
Sell indirect
14,116
$39.50
$557.58K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
17
$36.42
$619.14
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
83
$36.42
$3.02K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
5,316
$35.69
$189.73K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
25,327
$35.69
$903.92K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
1,210
$34.91
$42.24K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
5,763
$34.91
$201.19K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
4,187
$33.87
$141.81K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
19,948
$33.87
$675.64K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
4,688
$32.69
$153.25K
Booth Bruce
21 Oct 2025
Director
Sold on a plan indirect
22,339
$32.69
$730.26K
Cloonan Michael
21 Oct 2025
President & CEO
Sold after exercise
33,532
$37.31
$1.25M
Cloonan Michael
21 Oct 2025
President & CEO
Sold after exercise
22,895
$36.60
$837.96K
Cloonan Michael
21 Oct 2025
President & CEO
Sold after exercise
30,049
$35.63
$1.07M
Cloonan Michael
21 Oct 2025
President & CEO
Sold after exercise
13,324
$34.44
$458.88K
Booth Bruce
20 Oct 2025
Director
Sold on a plan indirect
5,412
$32.33
$174.97K
Booth Bruce
20 Oct 2025
Director
Sold on a plan indirect
25,788
$32.33
$833.73K
Booth Bruce
20 Oct 2025
Director
Sold on a plan indirect
4,300
$31.79
$136.70K
Booth Bruce
20 Oct 2025
Director
Sold on a plan indirect
20,485
$31.79
$651.22K
Booth Bruce
17 Oct 2025
Director
Sold on a plan indirect
52
$33.47
$1.74K
Booth Bruce
17 Oct 2025
Director
Sold on a plan indirect
248
$33.47
$8.30K
Booth Bruce
17 Oct 2025
Director
Sold on a plan indirect
4,503
$32.71
$147.29K
Booth Bruce
17 Oct 2025
Director
Sold on a plan indirect
21,451
$32.71
$701.66K
Booth Bruce
17 Oct 2025
Director
Sold on a plan indirect
6,049
$32.10
$194.17K
Booth Bruce
17 Oct 2025
Director
Sold on a plan indirect
28,821
$32.10
$925.15K
Cloonan Michael
16 Oct 2025
President & CEO
Sold after exercise
200
$34.00
$6.80K
Cloonan Michael
16 Oct 2025
President & CEO
Sold after exercise
10,225
$31.46
$321.69K
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
2,705
$33.38
$90.29K
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
12,888
$33.38
$430.20K
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
15,384
$32.84
$505.21K
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
73,296
$32.84
$2.41M
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
9,470
$31.69
$300.10K
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
45,117
$31.69
$1.43M
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
1,804
$30.15
$54.39K
Booth Bruce
16 Oct 2025
Director
Sold on a plan indirect
8,596
$30.15
$259.17K
Booth Bruce
15 Oct 2025
Director
Sold on a plan indirect
6,303
$31.12
$196.15K
Booth Bruce
15 Oct 2025
Director
Sold on a plan indirect
30,032
$31.12
$934.60K
Booth Bruce
15 Oct 2025
Director
Sold on a plan indirect
13,795
$30.37
$418.95K
Booth Bruce
15 Oct 2025
Director
Sold on a plan indirect
65,726
$30.37
$2.00M
Cloonan Michael
15 Oct 2025
President & CEO
Sold after exercise
14,775
$31.11
$459.66K
Booth Bruce
14 Oct 2025
Director
Sold on a plan indirect
105
$29.95
$3.14K
Booth Bruce
14 Oct 2025
Director
Sold on a plan indirect
501
$29.95
$15.00K
Booth Bruce
13 Oct 2025
Director
Sold on a plan indirect
857
$31.03
$26.59K
Booth Bruce
13 Oct 2025
Director
Sold on a plan indirect
4,082
$31.03
$126.66K
Booth Bruce
13 Oct 2025
Director
Sold on a plan indirect
9,245
$30.32
$280.31K
Booth Bruce
13 Oct 2025
Director
Sold on a plan indirect
44,048
$30.32
$1.34M
Booth Bruce
10 Oct 2025
Director
Sold on a plan indirect
3,511
$29.98
$105.26K
Booth Bruce
10 Oct 2025
Director
Sold on a plan indirect
16,727
$29.98
$501.48K
Booth Bruce
6 Oct 2025
Director
Sold on a plan indirect
2,047
$29.95
$61.31K
Booth Bruce
6 Oct 2025
Director
Sold on a plan indirect
9,753
$29.95
$292.10K
Booth Bruce
3 Oct 2025
Director
Sold on a plan indirect
6,548
$30.00
$196.44K
Booth Bruce
3 Oct 2025
Director
Sold on a plan indirect
31,198
$30.00
$935.94K
Booth Bruce
1 Oct 2025
Director
Sold on a plan indirect
35
$29.95
$1.05K
Booth Bruce
1 Oct 2025
Director
Sold on a plan indirect
165
$29.95
$4.94K
Booth Bruce
30 Sep 2025
Director
Sold on a plan indirect
2,149
$30.06
$64.60K
Booth Bruce
30 Sep 2025
Director
Sold on a plan indirect
10,239
$30.06
$307.78K
Cloonan Michael
29 Sep 2025
President & CEO
Sold after exercise
7,793
$29.70
$231.45K
Booth Bruce
29 Sep 2025
Director
Sold on a plan indirect
11,468
$30.09
$345.07K
Booth Bruce
29 Sep 2025
Director
Sold on a plan indirect
54,637
$30.09
$1.64M
Cloonan Michael
26 Sep 2025
President & CEO
Sold after exercise
17,207
$28.85
$496.35K

What was left out

Form 4 filings counted 50
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 15
Sales on a Rule 10b5-1 plan 90
Sales straight out of an exercise 12
Sales at will 45
Transactions with no price 0
Shares from compensation/vesting 180,750
History held since 10 Feb 2025