3 earlier Form 4 trades (code P or S) here by this insider (3 buys), the last on Dec 15, 2025.
-10.0% median (-2.2% mean) 90-day return after 3 previous buys.
The trade is 1.5% of the 518,440 shares held after it.
1 other insider bought within 30 days.
39 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: President and CEO Stratmann Philipp bought about $2.6K of OPTT on Dec 16, 2025; 1 other insider bought within 30 days and 39 funds added in the latest 13F quarter.
2 earlier Form 4 trades (code P or S) here by this insider (2 buys), the last on Sep 17, 2025.
-21.7% median (-21.7% mean) 90-day return after 2 previous buys.
The trade is 1.2% of the 510,690 shares held after it.
1 other insider bought within 30 days.
39 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: President and CEO Stratmann Philipp bought about $2.1K of OPTT on Dec 15, 2025, the largest insider purchase at the company since 2024; 1 other insider bought within 30 days and 39 funds added in the latest 13F quarter.
1 earlier Form 4 trade (code P or S) here by this insider (1 buy), the last on Sep 18, 2023.
The trade is 5.5% of the 268,132 shares held after it.
1 other insider bought within 30 days.
39 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: CFO Powers Robert Patrick bought about $5.0K of OPTT on Dec 15, 2025, the largest insider purchase at the company since 2024; 1 other insider bought within 30 days and 39 funds added in the latest 13F quarter.
1 earlier Form 4 trade (code P or S) here by this insider (1 buy), the last on Sep 28, 2023.
The trade is 14.5% of the 241,871 shares held after it.
1 other insider bought within 30 days.
39 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Slaiby Peter E. bought about $6.7K of OPTT on Nov 25, 2024; 1 other insider bought within 30 days and 39 funds added in the latest 13F quarter.
11 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Nobody has filed for crossing 5%. That is a fact, not missing data.
OPTT planned insider sales (Form 144)
No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
OPTT mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Fidelity Extended Market Index Fund
$420.4K position · as of 2026-05-31
0.0%
VANGUARD EXTENDED MARKET INDEX FUND
$582.3K position · as of 2026-06-30
0.0%
Fidelity Series Total Market Index Fund
$106.1K position · as of 2026-05-31
0.0%
Fidelity Total Market Index Fund
$121.6K position · as of 2026-05-31
0.0%
VANGUARD TOTAL STOCK MARKET INDEX FUND
$1.6M position · as of 2026-06-30
0.0%
VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND
$22.4K position · as of 2026-06-30
0.0%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return · Phillip
Stratmann
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2024
$6.0M
$619.9K
$2.8M
+116%
n/a
2023
$858.9K
$350.1K
$424.7K
-63%
n/a
2022
$868.1K
$477.6K
$408.0K
-52%
n/a
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
The complete filing record, in one place.
The record shows 39 funds added last quarter. Each figure is a federal filing, dated the day it went public.
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$4.3M
four quarters, 2025-08-01 to 2026-07-31
Revenue, TTM OPTT
FY Apr 2026
$3.7M
FY Apr 2025
$5.9M
FY Apr 2024
$5.5M
FY Apr 2023
$2.7M
FY Apr 2022
$1.8M
Jul 2026
$1.7M
Apr 2026
$1.6M
Jan 2026
$513.0K
Oct 2025
$424.0K
Jul 2025
$1.2M
Apr 2025
$1.3M
Jan 2025
$825.0K
Oct 2024
$2.4M
At each fiscal year end
Single quarter
Net margin, TTM
-1,223%
net income over revenue, 2025-08-01 to 2026-07-31
Net margin, TTM OPTT
FY Apr 2026
-1,309%
FY Apr 2025
-417.5%
FY Apr 2024
-497.4%
FY Apr 2023
-964.0%
FY Apr 2022
-1,073%
Jul 2026
-618.7%
Apr 2026
-1,195%
Jan 2026
-2,216%
Oct 2025
-2,553%
Jul 2025
-625.0%
Apr 2025
-712.8%
Jan 2025
-814.5%
Oct 2024
-161.8%
At each fiscal year end
Single quarter
Free cash flow, TTM
-$28.1M
operating cash flow minus capex, 2025-08-01 to 2026-07-31
Free cash flow, TTM OPTT
FY Apr 2026
-$24.8M
FY Apr 2025
-$19.1M
FY Apr 2024
-$32.3M
FY Apr 2023
-$22.4M
FY Apr 2022
-$21.4M
Jul 2026
-$10.4M
Apr 2026
-$3.1M
Jan 2026
-$6.8M
Oct 2025
-$7.8M
Jul 2025
-$7.1M
Apr 2025
-$4.2M
Jan 2025
-$4.0M
Oct 2024
-$4.5M
At each fiscal year end
Single quarter
Debt to equity
1.17x
LongTermDebt as filed 2026-07-31 (includes the current portion); equity 2026-07-31
Debt to equity OPTT
FY Apr 2026
0.96x
FY Apr 2025
0.03x
FY Apr 2024
0.05x
FY Apr 2023
0.02x
FY Apr 2022
0.01x
Jul 2026
1.17x
Apr 2026
0.96x
Jan 2026
0.04x
Oct 2025
0.04x
Jul 2025
0.04x
Apr 2025
0.03x
Jan 2025
0.03x
Oct 2024
0.04x
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
-2.56x
TTM operating cash flow over LongTermDebt as filed 2026-07-31 (includes the current portion)
Cash flow to debt OPTT
FY Apr 2026
-1.73x
FY Apr 2025
-20.91x
FY Apr 2024
-33.40x
FY Apr 2023
-24.36x
FY Apr 2022
-23.90x
Jul 2026
-2.56x
Apr 2026
-1.73x
Jan 2026
-26.86x
Oct 2025
-23.43x
Jul 2025
-20.33x
Apr 2025
-20.91x
Jan 2025
-22.09x
Oct 2024
-28.24x
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
-319.0%
TTM net income over average of 2025-07-31 and 2026-07-31
Return on equity OPTT
FY Apr 2026
-250.0%
FY Apr 2025
-106.4%
FY Apr 2024
-86.8%
FY Apr 2023
-46.7%
FY Apr 2022
-25.3%
Jul 2026
-319.0%
Apr 2026
-250.0%
Jan 2026
-159.0%
Oct 2025
-154.5%
Jul 2025
-117.9%
Apr 2025
-106.4%
Jan 2025
-80.5%
Oct 2024
-80.3%
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
-138.2%
TTM net income over average of 2025-07-31 and 2026-07-31
Return on assets OPTT
FY Apr 2026
-138.3%
FY Apr 2025
-82.2%
FY Apr 2024
-67.0%
FY Apr 2023
-41.5%
FY Apr 2022
-23.6%
Jul 2026
-138.2%
Apr 2026
-138.3%
Jan 2026
-103.1%
Oct 2025
-103.6%
Jul 2025
-83.3%
Apr 2025
-82.2%
Jan 2025
-63.2%
Oct 2024
-64.9%
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
n/a
tax provision or pre-tax income not filed for the four quarters
Return on invested capital OPTT
FY Apr 2026
n/a
FY Apr 2025
n/a
FY Apr 2024
n/a
FY Apr 2023
n/a
FY Apr 2022
n/a
Jul 2026
n/a
Apr 2026
n/a
Jan 2026
n/a
Oct 2025
n/a
Jul 2025
n/a
Apr 2025
n/a
Jan 2025
n/a
Oct 2024
n/a
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
-271.3%
operating income (EBIT proxy) over average of 2025-07-31 and 2026-07-31 minus current liabilities
Return on capital employed OPTT
FY Apr 2026
-187.1%
FY Apr 2025
-88.8%
FY Apr 2024
-87.8%
FY Apr 2023
-50.4%
FY Apr 2022
-28.3%
Jul 2026
-271.3%
Apr 2026
-187.1%
Jan 2026
-131.0%
Oct 2025
-128.4%
Jul 2025
-99.1%
Apr 2025
-88.8%
Jan 2025
-73.0%
Oct 2024
-80.9%
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
P/E, trailing OPTT
FY Apr 2026
n/a
FY Apr 2025
n/a
FY Apr 2024
n/a
FY Apr 2023
n/a
FY Apr 2022
n/a
Jul 2026
n/a
Apr 2026
n/a
Jan 2026
n/a
Oct 2025
n/a
Jul 2025
n/a
Apr 2025
n/a
Jan 2025
n/a
Oct 2024
n/a
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$8.8M
market value at close 2026-10-23 on 2026-09-11 shares, plus LongTermDebt as filed 2026-07-31 (includes the current portion), minus cash 2026-07-31
Enterprise value OPTT
FY Apr 2026
$85.4M
FY Apr 2025
$63.9M
FY Apr 2024
$9.0M
FY Apr 2023
$22.7M
FY Apr 2022
$52.3M
Jul 2026
$43.6M
Apr 2026
$85.4M
Jan 2026
$91.3M
Oct 2025
$82.6M
Jul 2025
$86.9M
Apr 2025
$63.9M
Jan 2025
$87.3M
Oct 2024
$13.5M
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
-452.1%
TTM free cash flow over market value at close 2026-10-23
FCF yield OPTT
FY Apr 2026
-30.2%
FY Apr 2025
-27.5%
FY Apr 2024
-286.3%
FY Apr 2023
-78.0%
FY Apr 2022
-36.2%
Jul 2026
-68.4%
Apr 2026
-30.2%
Jan 2026
-26.5%
Oct 2025
-24.6%
Jul 2025
-20.5%
Apr 2025
-27.5%
Jan 2025
-22.2%
Oct 2024
-185.0%
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
PEG, trailing OPTT
FY Apr 2026
n/a
FY Apr 2025
n/a
FY Apr 2024
n/a
FY Apr 2023
n/a
FY Apr 2022
n/a
Jul 2026
n/a
Apr 2026
n/a
Jan 2026
n/a
Oct 2025
n/a
Jul 2025
n/a
Apr 2025
n/a
Jan 2025
n/a
Oct 2024
n/a
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-23. Hover or tap a tile for its yearly and quarterly history.Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
OPTT ranks highest on financial health (30th percentile) and risk and compliance (16th), and lowest on profitability (2nd), among Utilities peers.
Profitability
2
Inputs
Return on equity-319.0% · 3 pct, sector of 104
Return on assets-138.2% · 4 pct, sector of 120
Return on invested capitaltax provision or pre-tax income not filed for the four quarters
Return on capital employed-271.3% · 0 pct, sector of 107
Financial health
30
Inputs
Debt to equity1.17x · 57 pct, sector of 113
Cash flow to debt-2.56x · 3 pct, sector of 113
Growth
3
Inputs
Revenue growth, YoY-88.1% · 3 pct, sector of 119
Backlog growth, YoYno backlog line filed, or no year-earlier backlog
Institutional and government
15
Inputs
Funds adding, latest quarter39 · 15 pct, sector of 121
Congress net buyers, 365dno Congress trades in 365 days
Federal contracts, 180dno federal contracts in 180 days
Lobbying spend, 4 quartersno lobbying filings in the last four quarters
Risk and compliance
16
Inputs
Short interest, % of float+20.1% · 2 pct, sector of 162
Recalls per $1B revenue, 3yrevenue under $50M or not filed, so a count cannot be scaled to size
EPA cases per $1B revenue, 5yrevenue under $50M or not filed, so a count cannot be scaled to size
New text in Risk Factors, latest 10-K+17.0% · 29 pct, sector of 111
2 not measured: Insider conviction, US patents
Insider conviction needs 1 of 2 inputs, 0 present: no Form 4 purchase or sale (code P or S) in 180 days; no insider trades in 180 days
US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet
5 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
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