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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•62 filings

SION

Sionna Therapeutics, Inc.

Net sales of $21.8M over the last 3 months

6 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$21,835,018

0 buyers · 6 sellers

12-month purchases

$0.00

0 distinct insiders

12-month sales

$151,094,363

13 distinct insiders

Highlighted alerts

47

53 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

100
Raw transactions
Everything returned by the filing
100
Voluntary view
P/S trades after deterministic checks
32
Administrative noise
Stored, never alerted
49
10b5-1
Shown as informational
SEC ownership XML facts
Code
A
Shares
28,132
Price
$0.00
Footnotes
5

Represents a grant of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. The RSUs will vest on June 17, 2027, subject to the Reporting Person's continued service with the Issuer as of the vesting date. Represents a grant of RSUs. Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. The RSUs will vest upon the achievement of a designated performance milestone, subject to the Reporting Person's continued service with the Issuer as of the vesting date. The exercise price of the option is $7.18 per share, representing the fair market value per share of the Issuer's Common Stock on September 17, 2026 (the "Repricing Date"). Unless otherwise provided by the Issuer's board of directors or its compensation committee, if the option is exercised before the applicable retention period ends, the exercise price will revert to its original exercise price. The retention period begins on the Repricing Date and ends on the earliest of (i) the 18-month anniversary of the Repricing Date (March 17, 2028), (ii) a Sale Event (as defined in the Sionna Therapeutics, Inc. 2025 Stock Option and Incentive Plan (the "2025 Plan")) or (iii) certain qualifying terminations of service. Effective on the Repricing Date, the Issuer's board of directors approved an option repricing. All of the other terms of the options remain unchanged. Such transactions were exempt pursuant to Rule 16b-6(d) and Rule 16b-3 of the Exchange Act, as applicable. This stock option award was issued pursuant to the 2025 Plan, and becomes exercisable in accordance with the vesting schedule specified in the award agreement and as previously reported on the applicable Form 4, subject to the Reporting Person's continued service with the Issuer as of the applicable vesting date.

Raspberry interpretation
Informational — no alert

Reason: administrative_code.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

100 transactions

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
33,800
Price
$7.46
Value
$252,148
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
3,415,011
Price
$6.32
Value
$21,582,870
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
85,918
Price
$44.86
Value
$3,854,281
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
85,918
Price
$44.86
Value
$3,854,281
Open SEC filing

Fitzpatrick Jennifer

Chief Legal Officer

Sale 10b5-1
Shares
10,250
Price
$43.60
Value
$446,862
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
115,844
Price
$45.50
Value
$5,270,902
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
115,844
Price
$45.50
Value
$5,270,902
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
101
Price
$44.49
Value
$4,493
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
101
Price
$44.49
Value
$4,493
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
184,639
Price
$46.22
Value
$8,534,015
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
184,639
Price
$46.22
Value
$8,534,015
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
59,767
Price
$44.58
Value
$2,664,413
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
59,767
Price
$44.58
Value
$2,664,413
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
48,546
Price
$44.61
Value
$2,165,637
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
48,546
Price
$44.61
Value
$2,165,637
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
2,948
Price
$44.52
Value
$131,245
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
2,948
Price
$44.52
Value
$131,245
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
52,397
Price
$44.68
Value
$2,341,098
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
52,397
Price
$44.68
Value
$2,341,098
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
226,906
Price
$45.34
Value
$10,287,918
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
226,906
Price
$45.34
Value
$10,287,918
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
235,863
Price
$44.64
Value
$10,528,924
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
235,863
Price
$44.64
Value
$10,528,924
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
47,814
Price
$44.51
Value
$2,128,201
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
47,814
Price
$44.51
Value
$2,128,201
Open SEC filing

Fitzpatrick Jennifer

Chief Legal Officer

Sale 10b5-1
Shares
10,250
Price
$33.86
Value
$347,019
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
29,063
Price
$44.58
Value
$1,295,629
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
29,063
Price
$44.58
Value
$1,295,629
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
1,890
Price
$44.57
Value
$84,237
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
1,890
Price
$44.57
Value
$84,237
Open SEC filing

TPG GP A, LLC

10% owner

SaleAlert
Shares
250,000
Price
$40.00
Value
$10,000,000
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
33,356
Price
$44.55
Value
$1,486,010
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
33,356
Price
$44.55
Value
$1,486,010
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
875
Price
$44.49
Value
$38,929
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
875
Price
$44.49
Value
$38,929
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
100
Price
$44.49
Value
$4,449
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
100
Price
$44.49
Value
$4,449
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
900
Price
$44.50
Value
$40,050
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
900
Price
$44.50
Value
$40,050
Open SEC filing

Fitzpatrick Jennifer

Chief Legal Officer

Sale 10b5-1
Shares
10,250
Price
$40.52
Value
$415,330
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
1,600
Price
$44.49
Value
$71,184
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
1,600
Price
$44.49
Value
$71,184
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
11,890
Price
$44.60
Value
$530,294
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
11,890
Price
$44.60
Value
$530,294
Open SEC filing

ORBIMED ADVISORS LLC

Director

Sale 10b5-1
Shares
94,583
Price
$44.54
Value
$4,212,727
Open SEC filing

Thompson Peter A.

Director

Sale 10b5-1
Shares
94,583
Price
$44.54
Value
$4,212,727
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
9,924
Price
$39.50
Value
$391,998
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
1,210
Price
$39.50
Value
$47,795
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
7,609
Price
$39.50
Value
$300,556
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
6,440
Price
$39.50
Value
$254,380
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
604
Price
$40.50
Value
$24,462
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
512
Price
$40.50
Value
$20,736
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
788
Price
$40.50
Value
$31,914
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
96
Price
$40.50
Value
$3,888
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
947
Price
$39.89
Value
$37,776
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
801
Price
$39.89
Value
$31,952
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
1,235
Price
$39.89
Value
$49,264
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
150
Price
$39.89
Value
$5,984
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
9
Price
$40.61
Value
$365.49
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
8
Price
$40.61
Value
$324.88
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
12
Price
$40.61
Value
$487.32
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
2
Price
$40.61
Value
$81.22
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
14,325
Price
$40.01
Value
$573,143
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
12,126
Price
$40.01
Value
$485,161
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
18,684
Price
$40.01
Value
$747,547
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
2,276
Price
$40.01
Value
$91,063
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
2,092
Price
$39.57
Value
$82,780
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
1,770
Price
$39.57
Value
$70,039
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
2,728
Price
$39.57
Value
$107,947
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
332
Price
$39.57
Value
$13,137
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
433
Price
$42.10
Value
$18,229
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
53
Price
$42.10
Value
$2,231
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
10,707
Price
$41.05
Value
$439,522
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
9,063
Price
$41.05
Value
$372,036
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
13,964
Price
$41.05
Value
$573,222
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
1,701
Price
$41.05
Value
$69,826
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
13,734
Price
$40.20
Value
$552,107
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
11,626
Price
$40.20
Value
$467,365
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
331
Price
$42.10
Value
$13,935
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
280
Price
$42.10
Value
$11,788
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
17,913
Price
$40.20
Value
$720,103
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
2,182
Price
$40.20
Value
$87,716
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
10,476
Price
$39.58
Value
$414,640
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
17,118
Price
$39.58
Value
$677,530
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
31,392
Price
$39.58
Value
$1,242,495
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
3,624
Price
$39.58
Value
$143,438
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
107,941
Price
$39.50
Value
$4,263,670
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
66,672
Price
$39.50
Value
$2,633,544
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
122,271
Price
$39.50
Value
$4,829,705
Open SEC filing

RA CAPITAL MANAGEMENT, L.P.

Director

SaleAlert
Shares
14,116
Price
$39.50
Value
$557,582
Open SEC filing

Cloonan Michael

President & CEO

Sale 10b5-1
Shares
33,532
Price
$37.31
Value
$1,251,079
Open SEC filing

Cloonan Michael

President & CEO

Sale 10b5-1
Shares
22,895
Price
$36.60
Value
$837,957
Open SEC filing

Cloonan Michael

President & CEO

Sale 10b5-1
Shares
30,049
Price
$35.63
Value
$1,070,646
Open SEC filing

Cloonan Michael

President & CEO

Sale 10b5-1
Shares
13,324
Price
$34.44
Value
$458,879
Open SEC filing

Booth Bruce

Director

Sale 10b5-1
Shares
17
Price
$36.42
Value
$619.14
Open SEC filing

Booth Bruce

Director

Sale 10b5-1
Shares
83
Price
$36.42
Value
$3,023
Open SEC filing

Booth Bruce

Director

Sale 10b5-1
Shares
5,316
Price
$35.69
Value
$189,728
Open SEC filing

Booth Bruce

Director

Sale 10b5-1
Shares
25,327
Price
$35.69
Value
$903,921
Open SEC filing

Booth Bruce

Director

Sale 10b5-1
Shares
1,210
Price
$34.91
Value
$42,241
Open SEC filing

Booth Bruce

Director

Sale 10b5-1
Shares
5,763
Price
$34.91
Value
$201,186
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.