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Amplitude, Inc.

AMPL Net selling
CIK 0001866692 #2166 in the set updated 17 Sep 2026
Bought (120 mo)
$100.44M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$384.25M
$6.62M on a plan · $238.03M straight out of an exercise
Sold at will
$139.60M
148 of 256 sales
Net
−$283.80M
−$39.16M against sales at will

By person

40 insiders · 325 transactions
33.6×

Spenser Skates holds 33.6 times base salary in stock. $15.14M of shares against $450.00K in salary for 2025.

Salary from the company's own proxy. The shares are what Spenser Skates last reported holding, valued at $12.30, the price Class A Common Stock was last bought or sold at on the open market here, on 10 Sep 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
SPURLOCK STEVEN M
10% owner
—
$55.22M (45) scheduled
−$55.22M
139,127
$1.71M
—
Vishria Eric
Director
—
$52.69M (9) scheduled
−$52.69M
394,333
$4.85M
—
Benchmark Capital Management Co. VIII, L.L.C. entity
10% owner
—
$51.50M (3) scheduled
−$51.50M
0
$0.00
—
Grady Patrick W
Director
$49.95M (24)
$4.99M (12) scheduled
+$44.97M
85,806
$1.06M
—
SC US (TTGP), LTD. entity
10% owner
$49.95M (24)
$9.97M (24) scheduled
+$39.98M
0
$0.00
—
Skates Spenser
CEO and President
—
$37.34M (7)
−$37.34M
1,231,188
$15.14M
—
Johnson Jennifer L.
See remarks
—
$21.81M (12) scheduled
−$21.81M
0
$0.00
—
Heinz Matthew
Chief Revenue Officer
—
$20.43M (10) scheduled
−$20.43M
272,949
$3.36M
—
Institutional Venture Management XV, LLC entity
10% owner
—
$18.55M (8)
−$18.55M
29,835
$366.99K
—
Institutional Venture Partners XV Executive Fund, L.P. entity
10% owner
—
$18.55M (8)
−$18.55M
29,835
$366.99K
—
Vuong Hoang
Chief Financial Officer
—
$17.53M (7) scheduled
−$17.53M
813,896
$10.01M
+54,856%
GURLEY J WILLIAM
Director
—
$16.49M (14)
−$16.49M
0
$0.00
−100.0%
Liu Curtis
Chief Technology Officer
—
$16.00M (6)
−$16.00M
1,029,544
$12.66M
—
FENTON PETER H
10% owner
—
$7.55M (3)
−$7.55M
83,677
$1.03M
−58.1%
Cohler Matt
10% owner
—
$6.93M (7)
−$6.93M
188,753
$2.32M
−34.6%
Battery Management Corp. entity
10% owner
—
$4.13M (3)
−$4.13M
561,587
$6.91M
—
Battery Partners XI, LLC entity
10% owner
—
$4.13M (3)
−$4.13M
29,930
$368.16K
—
Crook Nathaniel Glenn
Chief Commercial Officer
—
$3.90M (1) scheduled
−$3.90M
1,622,696
$19.96M
+84.4%
Chaffee Todd C
10% owner
—
$2.38M (5)
−$2.38M
58,401
$718.37K
−38.0%
Sarkis Ninos
Chief Accounting Officer
—
$1.87M (8)
−$1.87M
83,891
$1.03M
+5,564%
Phelps Dennis B
10% owner
—
$1.62M (2)
−$1.62M
70,510
$867.32K
−25.2%
TOBIN SCOTT R
10% owner
—
$1.49M (5)
−$1.49M
0
$0.00
−100.0%
LASKY MITCHELL
10% owner
—
$1.38M (1)
−$1.38M
247,879
$3.05M
−23.4%
Wong Catherine
Director
—
$1.20M (24)
−$1.20M
111,462
$1.37M
—
Elhafed Morad
10% owner
—
$1.14M (1)
−$1.14M
0
$0.00
−100.0%
HANSEN THOMAS NEERGAARD
President
—
$975.20K (4)
−$975.20K
1,845,845
$22.71M
—
Schultz Erica
Director
—
$932.82K (7) scheduled
−$932.82K
143,100
$1.76M
—
Tavel Sarah E
10% owner
—
$764.73K (2)
−$764.73K
115,087
$1.42M
−27.0%
Feldman Jesse
10% owner
—
$723.06K (3)
−$723.06K
22,641
$278.50K
−31.7%
Thakker Dharmesh
10% owner
—
$688.50K (1)
−$688.50K
0
$0.00
−100.0%
Casey Andrew
Chief Financial Officer
$539.56K (2)
—
+$539.56K
1,363,338
$16.77M
+27,167%
Agrawal Neeraj
10% owner
—
$418.66K (1)
−$418.66K
327,766
$4.03M
—
Battery Ventures Select Fund I, L.P. entity
10% owner
—
$418.66K (1)
−$418.66K
327,766
$4.03M
−9.2%
Hu An-Yen
10% owner
—
$223.18K (7)
−$223.18K
10,285
$126.51K
—
Puttagunta Chetan
10% owner
—
$171.76K (1)
−$171.76K
0
$0.00
−100.0%
Harms Christopher
Chief Financial Officer
—
$133.67K (1)
−$133.67K
833,853
$10.26M
—
Tzuo Tien
Director
—
—
—
197,273
$2.43M
+34.7%
Whitehurst James M
Director
—
—
—
187,201
$2.30M
—
Gill Ronald S
Director
—
—
—
99,535
$1.22M
+625.0%
Steele Elisa
Director
—
—
—
21,690
$266.80K
—

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Individual transactions

50
Insider
Date
Role
Action
Shares
Price
Amount
Casey Andrew
7 Nov 2025
Chief Financial Officer
Buy
30,000
$9.99
$299.79K
Casey Andrew
13 Mar 2025
Chief Financial Officer
Buy
21,000
$11.42
$239.77K
Grady Patrick W
23 Feb 2022
Director
Buy indirect
384
$21.09
$8.10K
Grady Patrick W
23 Feb 2022
Director
Buy indirect
17,251
$20.50
$353.68K
Grady Patrick W
23 Feb 2022
Director
Buy indirect
151
$21.09
$3.18K
Grady Patrick W
23 Feb 2022
Director
Buy indirect
6,814
$20.50
$139.70K
Grady Patrick W
23 Feb 2022
Director
Buy indirect
3,515
$21.09
$74.13K
Grady Patrick W
23 Feb 2022
Director
Buy indirect
158,102
$20.50
$3.24M
SC US (TTGP), LTD.
23 Feb 2022
10% owner
Buy indirect
384
$21.09
$8.10K
SC US (TTGP), LTD.
23 Feb 2022
10% owner
Buy indirect
17,251
$20.50
$353.68K
SC US (TTGP), LTD.
23 Feb 2022
10% owner
Buy indirect
151
$21.09
$3.18K
SC US (TTGP), LTD.
23 Feb 2022
10% owner
Buy indirect
6,814
$20.50
$139.70K
SC US (TTGP), LTD.
23 Feb 2022
10% owner
Buy indirect
3,515
$21.09
$74.13K
SC US (TTGP), LTD.
23 Feb 2022
10% owner
Buy indirect
158,102
$20.50
$3.24M
Grady Patrick W
22 Feb 2022
Director
Buy indirect
22,618
$20.68
$467.64K
Grady Patrick W
22 Feb 2022
Director
Buy indirect
29,707
$20.01
$594.46K
Grady Patrick W
22 Feb 2022
Director
Buy indirect
8,933
$20.68
$184.69K
Grady Patrick W
22 Feb 2022
Director
Buy indirect
11,732
$20.01
$234.77K
Grady Patrick W
22 Feb 2022
Director
Buy indirect
207,284
$20.68
$4.29M
Grady Patrick W
22 Feb 2022
Director
Buy indirect
272,258
$20.01
$5.45M
SC US (TTGP), LTD.
22 Feb 2022
10% owner
Buy indirect
22,618
$20.68
$467.64K
SC US (TTGP), LTD.
22 Feb 2022
10% owner
Buy indirect
29,707
$20.01
$594.46K
SC US (TTGP), LTD.
22 Feb 2022
10% owner
Buy indirect
8,933
$20.68
$184.69K
SC US (TTGP), LTD.
22 Feb 2022
10% owner
Buy indirect
11,732
$20.01
$234.77K
SC US (TTGP), LTD.
22 Feb 2022
10% owner
Buy indirect
207,284
$20.68
$4.29M
SC US (TTGP), LTD.
22 Feb 2022
10% owner
Buy indirect
272,258
$20.01
$5.45M
Grady Patrick W
18 Feb 2022
Director
Buy indirect
43,046
$20.14
$867.06K
Grady Patrick W
18 Feb 2022
Director
Buy indirect
77,066
$19.21
$1.48M
Grady Patrick W
18 Feb 2022
Director
Buy indirect
36,738
$18.50
$679.48K
Grady Patrick W
18 Feb 2022
Director
Buy indirect
15,978
$17.49
$279.51K
Grady Patrick W
18 Feb 2022
Director
Buy indirect
17,000
$20.14
$342.43K
Grady Patrick W
18 Feb 2022
Director
Buy indirect
30,436
$19.21
$584.71K
Grady Patrick W
18 Feb 2022
Director
Buy indirect
14,509
$18.50
$268.35K
Grady Patrick W
18 Feb 2022
Director
Buy indirect
6,310
$17.49
$110.38K
Grady Patrick W
18 Feb 2022
Director
Buy indirect
394,499
$20.14
$7.95M
Grady Patrick W
18 Feb 2022
Director
Buy indirect
706,285
$19.21
$13.57M
Grady Patrick W
18 Feb 2022
Director
Buy indirect
336,696
$18.50
$6.23M
Grady Patrick W
18 Feb 2022
Director
Buy indirect
146,436
$17.49
$2.56M
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
43,046
$20.14
$867.06K
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
77,066
$19.21
$1.48M
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
36,738
$18.50
$679.48K
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
15,978
$17.49
$279.51K
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
17,000
$20.14
$342.43K
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
30,436
$19.21
$584.71K
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
14,509
$18.50
$268.35K
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
6,310
$17.49
$110.38K
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
394,499
$20.14
$7.95M
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
706,285
$19.21
$13.57M
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
336,696
$18.50
$6.23M
SC US (TTGP), LTD.
18 Feb 2022
10% owner
Buy indirect
146,436
$17.49
$2.56M
Showing 250 of 325 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 259
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 35
Sales on a Rule 10b5-1 plan 22
Sales straight out of an exercise 86
Sales at will 148
Transactions with no price 0
Shares from compensation/vesting 156,430,756
Sales filed before the plan box existed 142
History held since 23 Sep 2021