Sionna Therapeutics, Inc.(SION)Earnings Date, History & Expected Move

Next report date, beat rate and options-implied move

Next report

Nov 11, 2026

SION is scheduled to report on Nov 11, 2026, usually before the market opens. Analysts expect EPS of -$0.62.

Next report

Nov 11, 2026

In 18 days · usually before open

EPS beat rate

43%

3 of 7 quarters

Avg move after earnings

±6.1%

Up 43% of the time · last 7

Options-implied move

—

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EPS: Actual vs Estimate

Reported EPS against the consensus estimate, last 7 quarters.

Green beat or met, red missed, amber sources differ.

Stock Reaction After Earnings

Close-to-close move in the first session that reflected each report.

Dashed lines mark the average actual move (±6.1%).

Did the stock rise after good news?

The next-day move after each of its last 3 EPS beats and 4 misses.

When it beat expectations

3 reports

▲ Rose 1×

▼ Fell 2×

When it missed expectations

4 reports

▲ Rose 2×

▼ Fell 2×

In plain words: it beat expectations 3 times, but the stock still fell 2 of those 3 times.

Report by report

Aug '26
Missed
▲ +4.8%
May '26
Missed
▼ -10.9%
Mar '26
Beat
▼ -7.2%
Nov '25
Beat
▼ -1.6%
Aug '25
Beat
▲ +13.4%
May '25
Missed
▲ +4.7%
Mar '25
Missed
▼ 0.0%

Clear beats and misses with a known reaction only. What counts as a beat

After an EPS beat

+1.5%

average next-day move · up 33% of 3 times

After an EPS miss

-0.4%

average next-day move · up 50% of 4 times

Why did SION fall after beating earnings?

4 of SION's last 7 reactions went against the EPS result. What stands out in each:

SION beat EPS estimates in 3 quarters, and the stock still closed lower the next day 2 times.

Mar 2, 2026EPS beat +13.2%stock -7.2% next day
- It opened 10.0% lower as soon as trading resumed.
Nov 5, 2025EPS beat +2.1%stock -1.6% next day
- It had risen 24.6% in the 20 trading sessions before the report, so good news may already have been priced in.

Rose despite an EPS miss (2 of 4)

Aug 6, 2026EPS missed -1.5%stock +4.8% next day
- The EPS miss was small (-1.5%).
May 12, 2025EPS missed -37.8%stock +4.7% next day
- It had already fallen 9.3% in the final week before the report, so weak results may have been expected.
- It opened 1.1% higher as soon as trading resumed.

Patterns in estimates and prices, not confirmed causes: how we read them.

Was SION's earnings move already priced in?

SION's move in the month before each of its last 7 reports, against what it did after.

Avg move in the month before

+6.4%

last 7 reports

Higher before the report

57%

of the time

After a run-up of 3%+

Fell 50%

4 reports, avg -0.7%

After a drop of 3%+

Rose 33%

3 reports, avg +2.1%

How the run-up is measured (a move of 5% or more counts as large).

Before vs after each report

Grey: the month before each of the last 7 reports. Green or red: the day after.

Past reports only. How the run-up is measured

Does SION hold its opening gap after earnings?

SION's opening move after each report and where it closed that day.

In 5 reports SION opened at least 1% away from the previous close. It gave back half or more of that gap by the close 1 of 5 times (20%). Gaps up faded 1 of 3; gaps down recovered 0 of 2.

May 12, 2026Held
Opened -1.9%, closed -10.9%
Mar 2, 2026Held
Opened -10.0%, closed -7.2%
Aug 11, 2025Held
Opened +5.3%, closed +13.4%
May 12, 2025Held
Opened +1.1%, closed +4.7%
Mar 20, 2025Faded
Opened +2.2%, closed 0.0%

How gaps, fades and reversals are defined

SION earnings history

Last 7 reported quarters with the stock's reaction.

Swipe sideways to see every column →

Report date	Time	EPS est.	EPS actual	Surprise	1-day move	3-day move
Aug 6, 2026	Before open	-$0.65	-$0.66	-1.5%	+4.80%	-90.49%
May 12, 2026	Before open	-$0.50	-$0.60	-20.0%	-10.90%	-6.92%
Mar 2, 2026	Before open	-$0.53	-$0.46	+13.2%	-7.17%	-5.39%
Nov 5, 2025	Before open	-$0.47	-$0.46	+2.1%	-1.57%	-2.61%
Aug 11, 2025	Before open	-$0.45	-$0.41	+8.9%	+13.36%	+18.34%
May 12, 2025	Before open	-$0.45	-$0.62	-37.8%	+4.71%	-2.60%
Mar 20, 2025	Before open	-$2.68	-$3.38	-26.1%	0.00%	-12.82%

Consensus for the next report: EPS -$0.62, revenue $0.00.

SION Earnings FAQ

Answers computed from Sionna Therapeutics, Inc.'s reported history

SION is scheduled to report on Nov 11, 2026, usually before the market opens. Analysts expect EPS of -$0.62.

Over the last 7 quarters with a usable EPS surprise, SION beat the consensus estimate 3 times (43%), missed 4 and landed in line 0. It has missed estimates in each of the last 2 counted quarters.

Across its last 7 quarters with a measured reaction, SION moved an average of ±6.1% in the first session after reporting. It closed higher 43% of the time; the largest gain was 13.4% and the largest drop -10.9%.

Across its last 7 quarters with price data, SION moved an average of +6.4% in the 20 trading sessions before reporting and was higher in 57% of them. After a run-up of 3% or more (4 quarters), it fell the next day 50% of the time, averaging -0.7%. After a drop of 3% or more (3 quarters), it rose the next day 33% of the time, averaging +2.1%. This describes past reports; it is not a forecast.

In 5 reports SION opened at least 1% away from the previous close. It gave back half or more of that gap by the close 1 of 5 times (20%), and fully reversed 0 times. A fade means the opening move was partly undone during the first session.

How we calculate these numbers · SION: 7 reported quarters, latest Aug 6, 2026. Information only, not investment advice.

Earnings this week

Every report this week with expected moves.

Biggest expected earnings moves

Options-implied vs historical move, ranked.