Sutro Biopharma (STRO) Insider Trades, Congress & Funds

Smart money at a glance

Filings to Oct 31, 2026

No insider open-market trades in 90 days (SEC Form 4). Congress: no trades disclosed in 180 days.

Company insidersSEC Form 4, last 90 days: $0No open-market trades
CongressSTOCK Act, last 180 days: NoneNo trades disclosed
Big fundsSEC 13F, quarter ended Jun 30, 2026: 2 added, 0 cutMore adding

Analysts

What do analysts expect?

Analyst target and ratings are on paid plans

See the 12-month consensus target and the buy/hold/sell rating split.

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Questions about STRO filings

Are insiders buying or selling Sutro Biopharma (STRO) stock?

Neither. Sutro Biopharma (STRO) insiders filed no open-market purchases or sales in the 90 days to Oct 31, 2026, according to SEC Form 4 filings.

Which members of Congress have traded STRO recently?

None. No member of Congress disclosed a STRO trade with a trade date in the last 180 days, according to House and Senate STOCK Act filings.

How current is this STRO smart-money data?

This summary uses filings available on Oct 31, 2026. Insiders must report trades to the SEC within 2 business days, members of Congress have up to 45 days to disclose a trade, and funds file 13F holdings up to 45 days after each quarter ends, so the latest moves may not be public yet.

13F: filed up to 45 days late.

Smart money on STRO

Lean long1 source:
- Funds

Top traders
No tracked positions at the last update
Insiders
No recent insider filings found
Politicians
No recent politician filings found
Funds
- BlackRock, added +$31.5M, holdings at Jun 30
- State Street, added +$8.9M, holdings at Jun 30
Lean long · thin2 added · 0 trimmed
Quarter-end 13F holdings changes, not live trades. A trim is not a short.
Fin-fluencers
No recent posts found

Each bar is 100% of that source’s money. The notch marks an even split.

Lean is the direction of the latest moves. Descriptive, not advice.

Questions about STRO filings

Are insiders buying or selling Sutro Biopharma (STRO) stock?

Neither. Sutro Biopharma (STRO) insiders filed no open-market purchases or sales in the 90 days to Oct 31, 2026, according to SEC Form 4 filings.

Which members of Congress have traded STRO recently?

None. No member of Congress disclosed a STRO trade with a trade date in the last 180 days, according to House and Senate STOCK Act filings.

How current is this STRO smart-money data?

Funds

What funds are doing

2 moves · 6 mo

Buys/Adds$40.3M

Buys/Adds (2)

BR
BlackRock
Q2 2026 13F
$31.5M
added
Signals like this: n=13770, 53% finished lower at D15, median -0.4% vs SPY -0.4%
SS
State Street
Q2 2026 13F
$8.9M
added

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Reported Aug 12, 2026

Earnings came in 1.0% below what analysts expected.

Documents

Quarterly report10-Q Annual report10-K Every filing

Last report

Aug 12, 2026

Period ending

Jun 30, 2026

Earnings per share

-$2.31-1.01% miss

-$2.29 expected

Revenue

$9.8M

SEC filing

EPS: Yahoo Finance

Next report

Estimated report: Nov 5, 2026, in 5 days

Previous reports

Quarter / reported	Earnings per share	Beat or miss	Revenue / income	Revenue vs last year
Jun 30, 2026Reported Aug 12, 2026	-$2.31est. -$2.29	-1.01%miss	$9.8MSEC filing	-84.6%from $63.7M
Mar 31, 2026Reported May 14, 2026	-$2.94est. -$3.21	+8.60%beat	$14.5MSEC filing	-16.5%from $17.4M
Dec 31, 2025Reported Mar 23, 2026	-$4.88est. -$4.43	-10.24%miss	$11.6MYahoo Finance	No year-ago quarter
Sep 30, 2025Reported Nov 6, 2025	-$5.57est. -$3.55	-56.99%miss	$9.7MSEC filing	+13.8%from $8.5M
Jun 30, 2025Reported Aug 7, 2025	-$0.14est. -$0.39	+64.10%beat	$63.7MSEC filing	+148.0%from $25.7M
Mar 31, 2025Reported May 8, 2025	-$8.02est. -$9.20	+12.83%beat	$17.4MSEC filing	+33.8%from $13.0M
Dec 31, 2024Reported Mar 13, 2025	-$0.63est. -$0.95	+33.70%beat	$62.0M · FYSEC filing	No year-ago quarter
Sep 30, 2024Reported Nov 13, 2024	-$4.98est. -$7.35	+32.24%beat	$8.5MSEC filing	-49.7%from $16.9M

Earnings per share comes from Yahoo Finance where available, then Alpha Vantage or the company release. Revenue comes from company releases, SEC filings, Alpha Vantage or Yahoo Finance. A beat or miss needs an analyst estimate on the same basis as the reported figure, so quarters without one show none. Non-USD amounts carry their currency code.

Open: $9.36
52-wk high: $43.85
High: $9.76
52-wk low: $7.15
Low: $9.08
Prev close: $9.29
Mkt cap: $151.6M
ROE: -1810.0%
Fwd P/E: 10.0x
Beta: 1.50
P/S: 3.3x
P/B: 2.1x
Profit margin: +0.0%
Op margin: -301.7%

Fundamentals

Is the business strong?

This company is running thin margins.

Net margin: 0.0%
Forward P/E: 10.03
Market cap: $152M

Valuation

P/S3.32
P/B2.11

Quality

Operating margin-301.7%
ROE-1810.0%
ROA-36.1%

Growth

Beta1.50

Technicals

Price structure

This stock is under pressure, and looks oversold after a sharp drop.

Trend

Under pressure

0 / 100

RSI 14

22oversold

20D volatility

96%annualized

52-week range

$9.14

$7.15$43.85

20D support

$8.11recent floor

20D resistance

$16.20recent ceiling

Returns

5D -11.2%20D -42.8%60D -63.6%

Price vs moving averages

SMA20 -22.5%SMA50 -41.5%SMA200 -60.3%

Volume pace

1.09xvs prior 20D

Quarter / reported

Earnings per share

Beat or miss

Revenue / income

Revenue vs last year

Jun 30, 2026Aug 12, 2026

-$2.31est. -$2.29

-1.01%

$9.8MSEC filing

-84.6%from $63.7M

Mar 31, 2026May 14, 2026

-$2.94est. -$3.21

+8.60%

$14.5MSEC filing

-16.5%from $17.4M

Dec 31, 2025Mar 23, 2026

-$4.88est. -$4.43

-10.24%

$11.6MYahoo Finance

No year-ago quarter

Sep 30, 2025Nov 6, 2025

-$5.57est. -$3.55

-56.99%

$9.7MSEC filing

+13.8%from $8.5M

Jun 30, 2025Aug 7, 2025

-$0.14est. -$0.39

+64.10%

$63.7MSEC filing

+148.0%from $25.7M

Mar 31, 2025May 8, 2025

-$8.02est. -$9.20

+12.83%

$17.4MSEC filing

+33.8%from $13.0M

Dec 31, 2024Mar 13, 2025

-$0.63est. -$0.95

+33.70%

$62.0M · FYSEC filing

No year-ago quarter

Sep 30, 2024Nov 13, 2024

-$4.98est. -$7.35

+32.24%

$8.5MSEC filing

-49.7%from $16.9M

Sutro Biopharma

Smart money at a glance

What do analysts expect?

Questions about STRO filings

Smart money on STRO

Questions about STRO filings

What funds are doing

How top traders are positioned

Unlock everything for $29/month

Earnings came in 1.0% below what analysts expected.

Estimated report: Nov 5, 2026, in 5 days

Previous reports

Is the business strong?

Price structure

Ask it in Claude or ChatGPT.

Sutro Biopharma

Smart money at a glance

What do analysts expect?

Questions about STRO filings

Smart money on STRO

Questions about STRO filings

What funds are doing

How top traders are positioned

Unlock everything for $29/month

Earnings came in 1.0% below what analysts expected.

Estimated report: Nov 5, 2026, in 5 days

Previous reports

Is the business strong?

Price structure

Ask it in Claude or ChatGPT.

Sutro Biopharma

Overview

Questions about STRO filings

Smart money

Unlock everything for $29/month

Earnings

Previous reports

Financials

Technicals

Ask it in Claude or ChatGPT.

Sutro Biopharma

Overview

Questions about STRO filings

Smart money

Unlock everything for $29/month

Earnings

Previous reports

Financials

Technicals

Ask it in Claude or ChatGPT.