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sellWeak cluster of 410b5-1 plan

Matthew R Henn sold $1,215 of MCRB

See Remarks at Seres Therapeutics, Inc.. 73 shares at an average of $16.65, traded Aug 18, 2025, filed Aug 19, 2025.

Warning score
0
Value
$1,215
73 shares
Holdings after
4,548
-2% from before
From 52-week low
+161%
low $6.77, close $17.69
From 52-week high
-24%
high $23.20, as of Aug 18, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $1k at market
    0
  • Share of holdings sold
    Sold 1.6% of holdings
    0
  • Cluster
    4 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +11.0%, 3m +52.1%, 6m -49.0%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

MCRBOct 9, 2026 · close 2.71
Since filing Aug 19, 2025: -83.3%SPY +23.3% · excess -106.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000950170-25-110090, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 15, 2025MOption exercise
Common Stock10b5-1
+141--4,524Aug 19, 2025
Aug 15, 2025MOption exercise
Common Stock10b5-1
+97--4,621Aug 19, 2025
Aug 18, 2025SOpen-market sale
Common Stock10b5-1
-73$16.65$1,2154,548Aug 19, 2025
Aug 15, 2025MOption exercise
Restricted Stock Unitsderivative10b5-1
-141$0.00$0844Aug 19, 2025
Aug 15, 2025MOption exercise
Restricted Stock Unitsderivative10b5-1
-97$0.00$0976Aug 19, 2025

Related signals

Other insiders at Seres Therapeutics, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
15Weak
MCRBsell 4
Seres Therapeutics, Inc.
Kelly Brady
See Remarks
$444
59 shares
-1%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Thomas DesRosier
See Remarks
$595
79 shares
-1%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Matthew R Henn
See Remarks
$580
77 shares
-1%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Eric D. Shaff
CEO and President
$1,950
259 shares
-2%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Thomas DesRosier
See Remarks
$661
78 shares
-1%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Matthew R Henn
See Remarks
$754
89 shares
-1%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Eric D. Shaff
CEO and President
$2,194
259 shares
-2%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Teresa L. Young
See Remarks
$635
75 shares
-1%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Thomas DesRosier
See Remarks
$1,315
76 shares
-1%
0Weak
MCRBsell 410b5-1
Seres Therapeutics, Inc.
Matthew R Henn
See Remarks
$22k
1,257 shares
-14%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Matthew R Henn sold $1,215 of MCRB | InsiderTell