Speiser Michael L

10% owner at ALABAMA NATIONAL BANCORPORATION · on record since Mar 22, 2024
Director at Workday, Inc. · on record since Jun 21, 2024
10% owner at QUINSTREET, INC · on record since Feb 10, 2010
10% owner at Mattersight Corp · on record since May 29, 2008
10% owner at CORCEPT THERAPEUTICS INC · on record since May 12, 2008
10% owner at Molecular Templates, Inc. · on record since Sep 8, 2008
10% owner at Dex Liquidating Co. · on record since Oct 2, 2009
Director at Snowflake Inc. · on record since Apr 6, 2026
10% owner at MATRIA HEALTHCARE INC · on record since Dec 2, 2011
Director at Everpure, Inc. · on record since Oct 13, 2015
10% owner at Everpure, Inc. · on record since Oct 13, 2015
10% owner at Yext, Inc. · on record since Apr 21, 2017
10% owner at Venus Concept Inc. · on record since Oct 18, 2017
10% owner at Forty Seven, Inc. · on record since Jun 27, 2018
10% owner at Snowflake Inc. · on record since Sep 22, 2020

Insider trading activity of Speiser Michael L

Transactions on record: 723; since May 14, 2008

Open-market buys: 35; $20.2M

Open-market sells: 407; $937.6M

Companies traded: 11; last filing Oct 2, 2026

Figures computed from official regulatory filings — .

Companies where Speiser Michael L has traded

Snowflake Inc.439 tx · $782.8M · Oct 2, 2026
4 tx · Jun 18, 2026
120 tx · $200.4M · Jun 24, 2019
18 tx · $2.2M · Jul 3, 2018
27 tx · Dec 5, 2017
25 tx · $794.6K · Oct 18, 2017
26 tx · $10.5M · Jun 2, 2017
24 tx · $7.8M · Oct 3, 2014
6 tx · $1M · Mar 22, 2013
17 tx · $1.3M · Apr 2, 2012
17 tx · $8.7M · Sep 16, 2008

Track record of Speiser Michael L

Statistical track record

Free account

Open-market buys: 41

Last buy: Jun 7, 2024

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of Speiser Michael L

Co-insiders of Speiser Michael L

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-403	344.00 USD	$138.6K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-34,005	344.00 USD	$11.7M	Unusual size	SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-12,973	344.00 USD	$4.5M		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-403	353.87 USD	$142.6K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-12,973	353.87 USD	$4.6M		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-34,005	353.87 USD	$12M	Unusual size	SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-12,973	324.06 USD	$4.2M	Unusual size	SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-34,005	324.06 USD	$11M	Unusual size	SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-403	324.06 USD	$130.6K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-465	255.16 USD	$118.6K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-1,169	257.45 USD	$301K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-1,285	262.74 USD	$337.6K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-7	260.36 USD	$1.8K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-403	344.00 USD	$138.6K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-840	344.00 USD	$289K		SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-34,005	344.00 USD	$11.7M	Unusual size	SEC
Snowflake Inc.Listing unverified	Oct 2, 2026	Sell	-12,973	344.00 USD	$4.5M		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-403	353.87 USD	$142.6K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-840	353.87 USD	$297.3K		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-12,973	353.87 USD	$4.6M		SEC
Snowflake Inc.Listing unverified	Sep 9, 2026	Sell	-34,005	353.87 USD	$12M	Unusual size	SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-12,973	324.06 USD	$4.2M	Unusual size	SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-34,005	324.06 USD	$11M	Unusual size	SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-403	324.06 USD	$130.6K		SEC
Snowflake Inc.Listing unverified	Aug 11, 2026	Sell	-840	324.06 USD	$272.2K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-465	255.16 USD	$118.6K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-1,169	257.45 USD	$301K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-1,285	262.74 USD	$337.6K		SEC
Snowflake Inc.Listing unverified	Jul 8, 2026	Sell	-7	260.36 USD	$1.8K		SEC