Early Access — free while we kick the tires
EdgarHawk

SUMME GREGORY L

Director

Director
8 filings analyzed · 2 companies · Latest 2026-02-12

Companies

Company Buys Sells Direction
Avantor, Inc. AVTR 7 0 Net buying
STATE STREET CORP STT 0 2 Net selling

Activity

February 2026
2026-02-12 Avantor, Inc. AVTR
medium
Buy
100,000 shares
$940,000
Significance 5/10

Director SUMME GREGORY L buys 100,000 shares of AVTR at $9.40; stock down -52.3% from 52-week high.

SUMME GREGORY L acquired 100,000 shares at $9.40 on 2026-02-12, expanding his stake by +33.3% to 400,000 shares post-transaction. The purchase occurs at depressed levels, with the stock trading at $9.14 (current price) and -52.3% below its 52-week high of $19.16, reflecting substantial recent deterioration. AVTR fundamentals show material headwinds: the company posted a net loss of $711.8M in the latest quarter against $1.6B in revenue, with full-year net income negative and annual revenue growth contracted -3.4% year-over-year. Examining the insider's prior AVTR-specific history, his prior 4 completed buys at this ticker yielded mixed near-term outcomes—2 of 4 posts were well-timed at the 90-day mark, but the two most recent buys in August and late October 2025 underperformed, with the August buy down -12.3% at 90-day horizon. His cross-ticker buy track record shows 6 prior buys averaging +5.5% 30-day return and +0.1% 90-day return with a 60% win rate, which is modest and does not establish strong predictive power. The purchase occurs in a volatile, unprofitable company after a sharp 52-week drawdown, at a price near its bottom but amid negative momentum (-27.5% over 30 days, -19.7% over 90 days).

October 2025
2025-10-31 Avantor, Inc. AVTR
high
Buy
100,000 shares
$1,125,000
Significance 6/10

Director Gregory L Summe purchases 100,000 shares of AVTR at $11.25; holdings increase to 300,000 shares.

Director Summe purchased 100,000 shares of Avantor at $11.25 on 2025-10-30, expanding his holdings by 50.0% to 300,000 shares and committing $1.1M in capital at a price -48.6% from the 52-week high of $22.99. His SAME-TICKER history at AVTR shows 3 of 4 prior buys were well-timed at the 90-day mark with positive returns, establishing a pattern of disciplined accumulation during downturns. However, the company faces near-term headwinds: annual revenue growth is -2.6%, net income stands at $-711.8M, and the stock is -13.5% over the past 30 days, suggesting Summe is acquiring shares against the current momentum. The purchase reflects confidence in current valuation but occurs in a period of operational strain.

August 2025
2025-08-22 Avantor, Inc. AVTR
high
Buy
100,000 shares
$1,256,000
Significance 7/10

Director Gregory L Summe buys 100,000 shares of AVTR at $12.56 total $1.3M, doubling holdings to 200,000 shares

Director Gregory L Summe purchased 100,000 shares at $12.56 on 2025-08-21, exactly doubling his position from 100,000 to 200,000 shares for a total investment of $1,256,000.00. This is a substantial open-market acquisition executed at a price 52.1% below the 52-week high of $27.70, and just 5.3% below the current price of $13.27. Notably, his prior four trades at Avantor were all purchases, with 3 of 4 well-timed at the 90-day mark, establishing a pattern of favorable entry execution at this ticker. The company trades at a P/E of 13.14 on a $9.0B market cap with revenue of $1.7B, though annual revenue growth stands at -2.6%. The transaction occurs after a recent 30-day decline of -2.4%, suggesting entry during a period of weakness.

May 2025
2025-05-27 Avantor, Inc. AVTR
high
Buy
30,000 shares
$375,000
Significance 6/10

Director Summe Gregory L bought 30,000 shares of AVTR at $12.50 on 2025-05-23, raising stake to 100,000 shares (+42.9%)

Director Summe Gregory L purchased 30,000 shares at $12.50 on 2025-05-23, the third consecutive buy in this security within one month (prior buys on 2025-05-22 and 2025-05-07). This transaction increases his holdings to 100,000 shares, a 42.9% increase from his pre-transaction position. The current price of $13.15 sits near the low end of the 52-week range ($11.94–$27.70), down 52.5% from the 52-week high, providing context for the entry point. Across his full trading history, his prior sells have averaged a 90-day return of +6.1%, indicating his prior sell timing has not been well-executed; however, his AVTR-specific trade outcomes are not yet measurable, so this pattern cannot be assessed at this ticker.

2025-05-22 Avantor, Inc. AVTR
medium
Buy
20,000 shares
$253,000
Significance 4/10

Director Gregory Summe bought 20,000 AVTR shares at $12.65 on 2025-05-22; stock now -53.6% from 52-week high.

Director Summe acquired 20,000 shares for $253,000, increasing his holdings by 40.0% to 70,000 shares total. This represents his third open-market purchase at AVTR in 25 days (prior buys on 2025-05-07 and 2025-04-28), following a period where Avantor's stock has declined -15.8% over 30 days and -25.7% over 90 days from current levels. The company trades at a P/E of 12.25 against annual revenue growth of -2.6%, while the stock sits -53.6% below its 52-week high of $27.70. Cross-ticker, Summe's 4 prior sells have shown a 50.00% well-timed rate (those sales preceded subsequent declines), though his prior transaction history at AVTR remains too recent to assess outcomes. The clustering of three buys within weeks and during a period of material price erosion warrants attention to whether this reflects management's view of intrinsic value or other factors driving the purchases.

2025-05-09 Avantor, Inc. AVTR
high
Buy
25,000 shares
$300,000
Significance 6/10

Director SUMME GREGORY L bought 25,000 shares of AVTR at $12.00 on 2025-05-07; cluster buy with 3 other insiders in past 14 days; stock down 56.6% from 52-week high.

Director SUMME GREGORY L purchased 25,000 shares at $12.00, doubling his holdings from 25,000 to 50,000 shares. The transaction is part of a cluster pattern with 3 other insiders also buying within the past 14 days, suggesting coordinated interest at current levels. However, context matters: the stock is trading at $12.02, down 56.6% from its 52-week high of $27.70 and down 24.4% over the past 30 days, indicating a period of significant weakness. The company carries a P/E of 11.45 on $1.6B in quarterly revenue, but annual revenue growth stands at -2.6%, showing underlying business contraction. While multi-insider buying can signal perceived value, the stock's sharp decline and negative revenue trend warrant scrutiny into whether this activity reflects conviction or reflects purchases timed to a tactical low in an otherwise deteriorating business trajectory.

April 2025
2025-04-29 Avantor, Inc. AVTR
high
Buy
25,000 shares
$312,500
Significance 7/10

Director Gregory L Summe buys 25,000 shares of AVTR at $12.50; stock down -54.2% from 52-week high; 3 other insiders bought in past 14 days

Director Summe acquired 25,000 shares at $12.50, establishing an initial position of 25,000 shares on 2025-04-28. The purchase occurs against a sharp backdrop: AVTR is currently trading at $12.69, down -54.2% from its 52-week high of $27.70 and off -41.0% over the past 90 days. This buy is notable because it forms part of a cluster pattern: 3 other insiders also purchased shares within the past 14 days, suggesting coordinated director-level confidence in the company's valuation at these depressed levels. While the company reports a reasonable P/E of 12.09 and positive net income of $64,500,000, annual revenue declined -2.6% year-over-year, indicating operational headwinds that likely contributed to the recent price erosion. The cluster buy pattern combined with the director-level participation at a 52-week low is a material signal for investors monitoring near-term market sentiment from the board.

February 2025
2025-02-19 STATE STREET CORP STT
medium
Sell
13,815 shares
$1,381,500
Significance 5/10

Director Summe Gregory L sells entire 13.8K-share position in STT for $1,381,500 in two Feb transactions at $100.00

Director Summe Gregory L executed 2 separate sales totaling 13,815 shares for $1,381,500.00, liquidating his complete holdings in State Street Corp at $100.00/share on 2025-02-18. This full-position exit occurs near the 52-week high ($102.23), with the stock currently trading at $99.81 and up 2.2% over 30 days and 3.6% over 90 days. Across his full cross-ticker track record, his prior 2 sells yielded an average 90-day return of 14.0% with a 0.00% well-timed rate, indicating his prior sales preceded subsequent gains (poorly-timed exits). The company trades at a P/E of 10.08 with $3.3B quarterly revenue and 8.8% annual growth, suggesting a modestly valued financial services profile; the complete liquidation without retention of any residual shares stands out in this context.

Related insiders

Create a free account

Build watchlists, get email alerts on the tickers you follow, and read the full AI analysis on every insider filing.

Sign up — free during early access