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SNWVD SANUWAVE Health, Inc. Insider Trading

Latest: Insider Sold $1.3M of Shares · Apr 2026
6 filings analyzed · Latest 2026-04-30
Insider buys
4
Insider sells
2
Unique insiders
2
Direction
Net buying

Historically, stocks have lagged the S&P 500 by a median ~2% over the 90 days after a low insider sell (n ≈ 2,652, 2022-2026). Past results don't predict the future. How we measure this ↗

April 2026
2026-04-30
low
70,648 shares
$1,274,971
@ $18.05
Significance 3/10

10% owner Opaleye Management sells ~71K shares across two days as SNWV stock slides from recent highs

Opaleye Management, a substantial institutional holder owning more than 10% of SANUWAVE, executed a multi-day sale totaling approximately $1.3 million in shares on April 28-29. The timing is notable: the stock has fallen significantly from its recent highs and is now trading well below where it was trading even thirty and ninety days ago, suggesting this liquidation came during a period of downward momentum. However, this transaction reflects routine portfolio rebalancing by an investment fund, not insider knowledge—Opaleye holds no operational role at the company. The company itself remains profitable with strong revenue growth and a reasonable valuation, so the fund's sale appears driven by portfolio management considerations rather than a loss of confidence in the business fundamentals. For investors, this filing is mostly administrative in nature and should not be interpreted as an executive abandoning ship.

December 2025
2025-12-10
high
144,810 shares
$4,450,061
@ $30.73
Significance 7/10

Manchester Management sold 144.8K shares (98.6% of holdings) for $4.5M at $30.73 avg; stock down 12.8% in 30 days, 19.3% in 90 days.

Manchester Management liquidated nearly all of its SNWV position through 4 separate sales totaling 144,810 shares for $4,450,061.36, retaining only 2,000 shares. The sales occurred across three days (Dec 8–10) at an average price of $30.73, which is currently 33.6% above the 52-week high and materially above the stock's current price of $29.88. The timing is notable: the stock has declined 12.8% over the past 30 days and 19.3% over the past 90 days—a pattern consistent with selling into a downtrend. While the insider's cross-ticker track record shows a 100.00% 90-day win rate on buys with an average 90-day return of +2081.2%, the prior SNWV purchase (Oct 2024) generated +153.9% 30-day and +219.3% 90-day returns, illustrating strong prior execution at this specific ticker. The company's recent quarter showed revenue of $11,451,000.00 and net income of $10,325,000.00, but the full-year net income was negative, creating a disconnect between quarterly profitability and annual-level loss-making. This near-complete exit at elevated prices against a backdrop of recent stock weakness and mixed fundamental signals warrants investor attention to the underlying drivers of the sale.

October 2025
2025-10-09
high
1,267 shares
$38,361
@ $30.28
Significance 7/10

10% Owner Opaleye Management buys 1,267 shares of SNWV at $30.28; prior two purchases at this ticker both returned +40.2% over 90 days.

Opaleye Management, a 10% shareholder, purchased 1,267 shares at $30.28, adding to a position now totaling 966.3K shares. The stock currently trades at $32.21, and while it has declined 28.4% from its 52-week high and fallen 10.8% over the past 30 days, Opaleye's prior purchase history at this ticker is noteworthy: two earlier buys (both on 2025-04-29) each delivered +40.2% returns over 90 days, indicating well-timed entry points. The insider's cross-ticker track record shows 20 prior buys averaging +8.9% 30-day returns and +20.2% 90-day returns with a 100% win rate. Against this backdrop, the current purchase arrives as the stock faces near-term pressure, despite SNWV's strong fundamentals including +60% annual revenue growth and recent profitability ($1.1M net income in the latest quarter). The pattern of prior success on the same ticker, combined with entry during a pullback, warrants monitoring for whether this trade aligns with the insider's historical timing acumen.

April 2025
2025-04-30
medium
7,998 shares
$203,875
@ $25.49
Significance 5/10

10% Owner Opaleye Management bought 7,998 shares at $25.49, raising stake 114.2% to 15,000 shares in unprofitable SNWV

Opaleye Management, a 10% owner, executed two separate purchases totaling 7,998 shares for $203,875.42 at $25.49 per share on 2025-04-29, increasing its stake by 114.2% from 7,002 to 15,000 shares. The company remains unprofitable with a net income of $-20,657,000.00 in its most recent full fiscal year, though revenue grew 60.0% year-over-year to $9,360,000.00 in the latest quarter. The stock has declined 23.5% over the past 30 days and trades 30.1% below its 52-week high of $38.71, though the insider's cross-ticker trading history shows an average 30-day return of -19.5% on prior open-market purchases. The transaction represents a material increase in the insider's exposure to a high-growth but currently unprofitable biomedical company during a period of significant stock price weakness.

November 2024
2024-11-01
high
27,868 shares
$438,902
@ $15.75
Significance 7/10

10% Owner Opaleye Management buys 27,868 shares for $438,902.36 across 5 trades (Oct 30–Nov 1, 2024)

Opaleye Management, a 10% holder of SANUWAVE Health, executed five separate purchases totaling 27,868 shares for $438,902.36 with a blended average price of $15.75, occurring immediately after the stock's 11-day public listing on November 1, 2024. The holder's position moved from -15,866 shares (short) to +12,002 shares (long), a net acquisition of the full 27,868 shares purchased. The timing coincides with the company's recent IPO window—a period when existing investors typically convert short positions or establish long positions—and the purchase prices ($17.50 down to $15.20) track the early price action in a freshly listed security. With Q1 revenue of $7.2M and quarterly net income of $6.6M offset by full-year negative profitability, the company's near-term fundamentals remain mixed, warranting close attention to whether this 10% holder's accumulation reflects confidence in post-listing trajectory or standard portfolio positioning following listing stabilization.

October 2024
2024-10-23
high
181,818 shares
$1,499,998
@ $8.25
Significance 8/10

MANCHESTER MANAGEMENT buys 181.8K SNWV shares at $8.25 ($1.5M); insider has perfect 100% win rate on 3 prior buys across tickers.

Manchester Management LLC purchased 181,818 shares of SANUWAVE Health at $8.25 on 2024-10-18 for $1,499,998.50, increasing holdings to 52,653 shares. This buy is notable because the insider's cross-ticker track record shows 3 prior open-market buys with a 90-day win rate of 100.00% and an average 90-day return of +4555.5%, demonstrating a consistent pattern of successful timing across multiple securities. The current stock price of $12.00 reflects a gain of 45.5% from the transaction price, and the 30-day and 90-day returns of +69.3% and +81.8% respectively show strong post-purchase price momentum. However, this filing involves a derivative-conversion transaction with incomplete Table II holdings data in the database, so the table I position of 52,653 shares does not represent the insider's full beneficial ownership and should not be interpreted as the extent of the stake.

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