STRO
Price
Day trading desk
VWAP and the session figures are computed from the delayed intraday series on this page, so they lag the live tape and will not match a broker's real-time VWAP exactly. Turn on Prior day H/L/C, Opening range and Volume profile in the chart's Studies menu to see these levels drawn on price.
Trailing performance
Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.
Unusual options activity
That is the normal state — most contracts trade well inside their existing open interest.
Contracts trading at or above their open interest, ranked by notional and where the print landed.
5 more panels on STRO open with an account.
Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.
Insider net activity
Insider transactions
| Date | Insider | Action | Shares | Value | Held |
|---|---|---|---|---|---|
| Sep 18, 26 | GERBER HANS-PETER PH.D. Officer |
— | 3.75K | — | Direct |
| Jun 2, 26 | CHOW GREGORY KWOK LEE Chief Financial Officer |
— | 2.50K | — | Direct |
| Mar 4, 26 | CHUNG JANE Chief Executive Officer |
— | 788 | — | Direct |
| Mar 4, 26 | PAULING DAVID J.D. General Counsel |
— | 675 | — | Direct |
| Mar 2, 26 | CHUNG JANE Chief Executive Officer |
— | 10.94K | — | Direct |
| Mar 2, 26 | GERBER HANS-PETER PH.D. Officer |
— | 3.97K | — | Direct |
| Mar 2, 26 | PAULING DAVID J.D. General Counsel |
— | 3.70K | — | Direct |
| Dec 12, 25 | CHUNG JANE Chief Executive Officer |
— | 2.50K | — | Direct |
| Oct 15, 25 | MATSUI CONNIE L Director |
BUY | 50.00K | $39.95K | Direct |
| Oct 15, 25 | CHOW GREGORY KWOK LEE Chief Financial Officer |
BUY | 19.75K | $16.00K | Direct |
| Oct 15, 25 | CHUNG JANE Chief Executive Officer |
BUY | 12.50K | $10.01K | Direct |
| Oct 15, 25 | GERBER HANS-PETER PH.D. Officer |
BUY | 17.00K | $13.61K | Direct |
| Oct 15, 25 | PAULING DAVID J.D. General Counsel |
BUY | 12.50K | $9.99K | Direct |
| Sep 18, 25 | GERBER HANS-PETER PH.D. Officer |
— | 37.50K | — | Direct |
What this is, and what it is not
These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.
A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.
This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.
Officer and director trades in their own stock, straight from Form 4 filings.
Insider holders
| Name | Relation | Shares held | Latest |
|---|---|---|---|
ALBINI EDWARD C |
Chief Financial Officer | 160.81K | Conversion of Exercise of derivative security |
BORGMAN ANNE ELIZABETH |
Officer | 97.45K | Conversion of Exercise of derivative security |
CHUNG JANE |
Chief Executive Officer | 21.29K | Conversion of Exercise of derivative security |
FITZPATRICK LINDA A. |
Officer | 130.13K | Conversion of Exercise of derivative security |
GERBER HANS-PETER PH.D. |
Officer | 12.37K | Conversion of Exercise of derivative security |
LEYMAN BARBARA |
Officer | 16.06K | Conversion of Exercise of derivative security |
MATSUI CONNIE L |
Director | 50.00K | Purchase |
NEWELL WILLIAM J |
Chief Executive Officer | 409.06K | Conversion of Exercise of derivative security |
PAULING DAVID J.D. |
General Counsel | 9.75K | Conversion of Exercise of derivative security |
SRINIVASAN VENKATESH |
Officer | 53.69K | Conversion of Exercise of derivative security |
Fundamentals
Valuation & profitability ratios
Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.
Financial statements
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Total revenue | $102.48M | $62.04M | $153.73M | $67.77M | +65.2% |
| Operating revenue | $102.48M | $62.04M | $153.73M | $67.77M | +65.2% |
| Research & development | $166.42M | $252.04M | $180.43M | $137.17M | -34.0% |
| Selling, general & admin | $41.02M | $48.45M | $62.58M | $59.54M | -15.3% |
| Total operating expense | $207.44M | $300.50M | $243.01M | $196.72M | -31.0% |
| Operating income | -$104.95M | -$238.45M | -$89.28M | -$128.94M | +56.0% |
| Net interest income | -$32.81M | $13.36M | -$9.24M | $109.00K | -345.7% |
| Pre-tax income | -$191.18M | -$225.10M | -$88.60M | -$116.70M | +15.1% |
| Tax provision | -$93.00K | $2.36M | $18.19M | $2.50M | -103.9% |
| Net income | -$191.09M | -$227.46M | -$106.79M | -$119.20M | +16.0% |
| Net income to common | -$191.09M | -$227.46M | -$106.79M | -$119.20M | +16.0% |
| Basic EPS | -22.49 | -29.40 | -17.80 | -23.50 | +23.5% |
| Diluted EPS | -22.49 | -29.40 | -17.80 | -23.50 | +23.5% |
| EBIT | -$149.12M | -$194.03M | -$64.85M | -$113.36M | +23.1% |
| EBITDA | -$141.79M | -$186.81M | -$58.03M | -$107.67M | +24.1% |
| Basic shares | 8.50M | 7.74M | 6.02M | 5.07M | +9.8% |
| Diluted shares | 8.50M | 7.74M | 6.02M | 5.07M | +9.8% |
| Line item | 2025 | 2024 | 2023 | 2022 | 2021 | YoY |
|---|---|---|---|---|---|---|
| Cash & equivalents | $58.13M | $190.30M | $69.27M | $47.25M | — | -69.5% |
| Cash & short-term investments | $141.43M | $316.89M | $375.62M | $334.36M | — | -55.4% |
| Accounts receivable | $3.98M | $8.62M | $36.08M | $7.12M | — | -53.8% |
| Total current assets | $150.93M | $343.31M | $421.54M | $353.15M | — | -56.0% |
| Property, plant & equipment | $21.55M | $35.87M | $44.76M | $51.06M | — | -39.9% |
| Total assets | $173.83M | $387.21M | $470.74M | $406.94M | — | -55.1% |
| Total current liabilities | $75.13M | $131.89M | $93.75M | $66.55M | — | -43.0% |
| Current debt | — | — | $4.06M | $12.50M | $9.38M | — |
| Long-term debt | — | — | — | $3.77M | $15.74M | — |
| Total debt | $15.67M | $23.15M | $33.63M | $50.43M | — | -32.3% |
| Total liabilities | $306.28M | $342.61M | $321.09M | $189.90M | — | -10.6% |
| Retained earnings | -$977.96M | -$786.87M | -$559.41M | -$452.62M | — | -24.3% |
| Shareholder equity | -$132.45M | $44.60M | $149.65M | $217.05M | — | -397.0% |
| Working capital | $75.79M | $211.42M | $327.80M | $286.61M | — | -64.1% |
| Net tangible assets | -$132.45M | $44.60M | $149.65M | $217.05M | — | -397.0% |
| Shares issued | 8.58M | 8.25M | 6.10M | 5.75M | — | +4.0% |
| Line item | 2025 | 2024 | 2023 | 2022 | 2021 | YoY |
|---|---|---|---|---|---|---|
| Net income | -$191.09M | -$227.46M | -$106.79M | -$119.20M | — | +16.0% |
| Depreciation & amortisation | $7.32M | $7.22M | $6.82M | $5.69M | — | +1.5% |
| Stock-based compensation | $14.01M | $24.69M | $24.91M | $26.30M | — | -43.3% |
| Change in working capital | -$50.40M | $8.90M | -$34.38M | $104.41M | — | -666.3% |
| Operating cash flow | -$177.23M | -$191.54M | -$111.62M | $3.55M | — | +7.5% |
| Capital expenditure | -$1.70M | -$3.10M | -$4.32M | -$7.86M | — | +45.3% |
| Investing cash flow | $45.01M | $218.51M | -$3.92M | -$35.02M | — | -79.4% |
| Share buybacks | — | — | $0 | $0 | -$7.00K | — |
| Financing cash flow | $44.00K | $94.05M | $137.55M | $48.31M | — | -100.0% |
| Free cash flow | -$178.93M | -$194.64M | -$115.93M | -$4.31M | — | +8.1% |
| End cash position | $58.99M | $191.16M | $70.14M | $48.13M | — | -69.1% |
| Line item | 2026-06-30 | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|---|---|
| Total revenue | $9.84M | $14.52M | $11.65M | $9.69M | $63.74M | — | -32.3% |
| Operating revenue | $9.81M | $14.52M | $11.65M | $9.69M | $63.65M | — | -32.4% |
| Research & development | $31.70M | $36.55M | $36.64M | $39.85M | $38.33M | — | -13.3% |
| Selling, general & admin | $7.83M | $7.58M | $8.66M | $8.74M | $10.34M | — | +3.3% |
| Total operating expense | $39.53M | $44.14M | $45.30M | $48.59M | $48.67M | — | -10.4% |
| Operating income | -$29.69M | -$29.61M | -$33.66M | -$38.90M | $15.08M | — | -0.2% |
| Net interest income | -$8.64M | -$8.84M | -$8.79M | -$8.40M | -$8.17M | — | +2.3% |
| Pre-tax income | -$38.53M | -$38.50M | -$46.84M | -$56.86M | -$11.52M | — | -0.1% |
| Tax provision | $1.00K | -$15.00K | -$82.00K | $0 | -$18.00K | — | +106.7% |
| Net income | -$38.53M | -$38.48M | -$46.76M | -$56.86M | -$11.50M | — | -0.1% |
| Net income to common | -$38.53M | -$38.48M | -$46.76M | -$56.86M | -$11.50M | — | -0.1% |
| Basic EPS | -2.33 | -2.94 | — | -6.70 | -1.40 | -9.08 | +20.7% |
| Diluted EPS | -2.33 | -2.94 | — | -6.70 | -1.40 | -9.08 | +20.7% |
| EBIT | -$28.16M | -$28.02M | -$36.52M | -$46.45M | -$826.00K | — | -0.5% |
| EBITDA | -$26.90M | -$26.74M | -$34.89M | -$44.55M | $1.07M | — | -0.6% |
| Basic shares | 16.57M | 13.08M | — | 8.49M | 8.46M | 8.36M | +26.7% |
| Diluted shares | 16.57M | 13.08M | — | 8.49M | 8.46M | 8.36M | +26.7% |
| Line item | 2026-06-30 | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 | YoY |
|---|---|---|---|---|---|---|
| Cash & equivalents | $54.34M | $73.68M | $58.13M | $65.93M | $64.03M | -26.3% |
| Cash & short-term investments | $164.35M | $202.56M | $141.43M | $167.59M | $205.13M | -18.9% |
| Accounts receivable | $5.80M | $12.48M | $3.98M | $3.92M | $8.00M | -53.6% |
| Total current assets | $175.65M | $220.97M | $150.93M | $182.11M | $231.63M | -20.5% |
| Property, plant & equipment | $16.82M | $19.07M | $21.55M | $26.69M | $29.82M | -11.8% |
| Total assets | $194.46M | $241.99M | $173.83M | $209.66M | $262.36M | -19.6% |
| Total current liabilities | $52.90M | $70.81M | $75.13M | $71.89M | $74.25M | -25.3% |
| Total debt | $10.78M | $13.63M | $15.67M | $17.66M | $19.59M | -20.9% |
| Total liabilities | $297.78M | $308.88M | $306.28M | $296.93M | $294.47M | -3.6% |
| Retained earnings | -$1.05B | -$1.02B | -$977.96M | -$931.19M | -$874.34M | -3.8% |
| Shareholder equity | -$103.32M | -$66.89M | -$132.45M | -$87.27M | -$32.11M | -54.5% |
| Working capital | $122.75M | $150.16M | $75.79M | $110.22M | $157.38M | -18.3% |
| Net tangible assets | -$103.32M | -$66.89M | -$132.45M | -$87.27M | -$32.11M | -54.5% |
| Shares issued | 16.58M | 16.57M | 8.58M | 8.51M | 8.47M | +0.1% |
| Line item | 2026-06-30 | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|---|---|
| Net income | -$38.53M | -$38.48M | -$46.76M | -$56.86M | -$11.50M | — | -0.1% |
| Depreciation & amortisation | $1.26M | $1.28M | $1.62M | $1.90M | $1.90M | — | -1.3% |
| Stock-based compensation | $2.01M | $1.56M | $1.66M | $1.55M | $5.26M | — | +28.7% |
| Change in working capital | -$13.78M | -$16.94M | $4.68M | $4.65M | -$50.58M | — | +18.7% |
| Operating cash flow | -$38.29M | -$42.26M | -$26.43M | -$38.19M | -$44.72M | — | +9.4% |
| Capital expenditure | — | -$11.00K | -$184.00K | -$251.00K | -$86.00K | -$1.17M | — |
| Investing cash flow | $19.36M | -$45.26M | $18.70M | $39.99M | $2.58M | — | +142.8% |
| Financing cash flow | -$418.00K | $103.08M | -$64.00K | $102.00K | -$60.00K | — | -100.4% |
| Free cash flow | -$38.29M | -$42.27M | -$26.62M | -$38.44M | -$44.81M | — | +9.4% |
| End cash position | $55.19M | $74.54M | $58.99M | $66.78M | $64.88M | — | -26.0% |
Options analytics
Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.
Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.
Earnings
Reported vs expected · EPS
| Quarter | Est. | Actual | Surprise |
|---|---|---|---|
| Jun 2026 | -2.29 | -2.31 | -1.0% |
| Mar 2026 | -3.22 | -2.94 | +8.6% |
| Dec 2025 | -4.43 | -4.88 | -10.2% |
| Sep 2025 | -3.55 | -5.57 | -57.0% |
Forward consensus
| Period | EPS | Analysts | Revenue | Growth |
|---|---|---|---|---|
| Current quarter | -2.07 | 3 | $13.62M | +40.5% |
| Next quarter | -2.36 | 3 | $13.59M | +16.7% |
| Current year | -7.77 | 3 | $51.55M | -49.7% |
| Next year | -6.21 | 4 | $31.59M | -38.7% |
Analyst targets & ownership
Price targets, consensus spread, insider and institutional ownership.
Moving averages & technicals
Options chain
Calls
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Puts
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Every listed expiry, both sides of the book, with volume, open interest and implied volatility.
Risk profile
Short interest
Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.
Rating changes
| Date | Firm | Action | From | To |
|---|---|---|---|---|
| Aug 13, 26 | Citizens | MAINTAINED | Market Outperform | Market Outperform |
| Aug 13, 26 | Wedbush | MAINTAINED | Outperform | Outperform |
| May 28, 26 | Barclays | INITIATED | — | Overweight |
| May 15, 26 | Leerink Partners | MAINTAINED | Outperform | Outperform |
| May 15, 26 | Wedbush | UPGRADE | Neutral | Outperform |
| May 15, 26 | HC Wainwright & Co. | MAINTAINED | Buy | Buy |
| Apr 30, 26 | Mizuho | INITIATED | — | Outperform |
| Apr 23, 26 | Citizens | MAINTAINED | Market Outperform | Market Outperform |
| Apr 17, 26 | Citizens | MAINTAINED | Market Outperform | Market Outperform |
| Apr 7, 26 | Leerink Partners | INITIATED | — | Outperform |
| Mar 25, 26 | Deutsche Bank | MAINTAINED | Buy | Buy |
| Mar 24, 26 | Wells Fargo | UPGRADE | Equal-Weight | Overweight |
Dividends & splits
SEC filings
Headlines
PRIVATE STRATEGY · BY QUALIFICATION
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