Sionna Therapeutics (SION)

Cash burn rate (est.)	Burn method: Change in cash		Burn method: Operating income		Burn method: FCF (opex + capex)
	Last Q	Avg 4Q	Last Q	Avg 4Q	Last Q	Avg 4Q
Cash on hand (at last report)	51.79 mm	51.79 mm	51.79 mm	51.79 mm	51.79 mm	51.79 mm
Cash burn (monthly)	(no burn)	2.66 mm	7.94 mm	5.45 mm	(no burn)	1.34 mm
Cash used (since last report)	n/a	11.43 mm	34.16 mm	23.45 mm	n/a	5.77 mm
Cash remaining	n/a	40.36 mm	17.63 mm	28.34 mm	n/a	46.02 mm
Runway (months of cash)	n/a	15.2	2.2	5.2	n/a	34.3

Beta Read what these cash burn values mean

Financial data from company earnings reports.

Institutional ownership, Q4 2024

SION institutional ownership history Ownership history

13F holders	Current	Prev Q	Change
Total holders	0	0
Opened positions	0	0
Closed positions	0	0
Increased positions	0	0
Reduced positions	0	0

13F shares	Current	Prev Q	Change
Total value	0.00	0.00
Total shares	0.00	0.00
Total puts	0.00	0.00
Total calls	0.00	0.00
Total put/call ratio	–	–	–

Largest owners	Shares	Value	Change

Largest transactions	Shares	Bought/sold	Change

Data from 13F filings, for the last complete 13F reporting period. For most recent data, click the ownership history button. Values as filed, not updated for current price. Long positions only.

Recent insider trades

SION insider ownership history Insider history

Date	Owner	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
3 Feb 26	Orbimed Advisors	Common Stock	Sell	Dispose S	Yes	No	44.58	29,063	1.30 mm	3,530,702
3 Feb 26	Thompson Peter A.	Common Stock	Sell	Dispose S	Yes	No	44.58	29,063	1.30 mm	3,530,702
2 Feb 26	Orbimed Advisors	Common Stock	Sell	Dispose S	Yes	No	44.57	1,890	84.24 k	3,559,765
2 Feb 26	Thompson Peter A.	Common Stock	Sell	Dispose S	Yes	No	44.57	1,890	84.24 k	3,559,765
22 Jan 26	TPG GP A	Common Stock	Sell	Dispose S	Yes	No	40	250,000	10.00 mm	6,494,962
2 Jan 26	Ridloff Elena	NQSO Common Stock	Grant	Acquire A	No	No	39.21	165,440	6.49 mm	165,440
2 Jan 26	Caroline Stark Beer	NQSO Common Stock	Grant	Acquire A	No	No	39.21	139,340	5.46 mm	139,340

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.