Ambarella, Inc. Insider Trading

AMBA

Last 12 months

Insiders sold $16.9M and bought nothing on the open market.

48% of the selling was scheduled in advance under 10b5-1 plans. CEO Feng-Ming Wang sold $1.44M on Mar 19 outside a plan. The last open-market buy by an executive or director was in Mar 2022.

Net open-market

−$16.9M

0 buys · 31 sales

Under a 10b5-1 plan

48%

of the value sold

Insiders who bought / sold

0 / 7

executives and directors

Last open-market buy

Mar 2022

Mar 7, 2022

Get an email when AMBA's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 25	Christopher B Paisley Director	Sold10b5-1 plan	250	$70.76	18K	0.6%	Form 4
Sep 18	John Alexander Young CFO	Sold10b5-1 plan	1,896	$67.28	128K	1.7%	Form 4
Sep 17	Feng-Ming Wang CEO	SoldNo plan	6,086	$64.83	395K	0.8%	Form 4
Sep 17	Chi-Hong Ju Senior VP, Systems & GM	SoldNo plan	2,009	$64.83	130K	1.2%	Form 4
Sep 17	Chan W Lee Chief Operations Officer	SoldNo plan	2,893	$64.83	188K	1.8%	Form 4
Sep 17	John Alexander Young CFO	SoldNo plan	3,126	$64.83	203K	2.8%	Form 4
Jul 9	Yun-Lung Chen VP, Business Dev. & Marketing	SoldNo plan	5,958	$78.66	469K	9.0%	Form 4
Jul 1	Chi-Hong Ju Senior VP, Systems & GM	SoldNo plan	10,000	$88.84	888K	5.7%	Form 4
Jul 1	Feng-Ming Wang CEO	Sold10b5-1 plan	16,250	$90.08	$1.46M	2.1%	Form 4
Jun 26	Christopher B Paisley Director	Sold10b5-1 plan	250	$62.01	16K	0.6%	Form 4
Jun 17	John Alexander Young CFO	Sold10b5-1 plan 2 parts	5,033	$67.54 average	340K	4.3%	Form 4
Jun 17	Chan W Lee Chief Operations Officer	SoldNo plan	2,951	$67.87	200K	1.8%	Form 4
Jun 17	Chi-Hong Ju Senior VP, Systems & GM	SoldNo plan	2,017	$67.87	137K	1.1%	Form 4
Jun 17	Feng-Ming Wang CEO	SoldNo plan	6,204	$67.87	421K	0.8%	Form 4
Jun 12	Yun-Lung Chen VP, Business Development and	SoldNo plan	9,856	$67.06	661K	13%	Form 4
May 26	John Alexander Young CFO	Sold10b5-1 plan	400	$96.00	38K	0.3%	Form 4
May 26	Feng-Ming Wang CEO	Sold10b5-1 plan 3 parts	32,500	$91.01 average	$2.96M	3.9%	Form 4
Apr 21	John Alexander Young CFO	Sold10b5-1 plan	1,971	$60.00	118K	1.6%	Form 4
Mar 17 – 19	John Alexander Young CFO	SoldNo plan 2 parts	7,615	$53.32 average	406K	6.0%	Form 4
Mar 17 – 19	Chan W Lee Chief Operations Officer	SoldNo plan 2 parts	10,370	$53.25 average	552K	6.1%	Form 4
Mar 17 – 19	Chi-Hong Ju Senior VP, Systems & GM, Asia	SoldNo plan 2 parts	6,884	$53.20 average	366K	3.8%	Form 4
Mar 17 – 19	Feng-Ming Wang CEO	SoldNo plan 2 parts	27,059	$53.18 average	$1.44M	3.1%	Form 4
Mar 2	Feng-Ming Wang CEO	Sold10b5-1 plan 5 parts	50,000	$60.80 average	$3.04M	5.7%	Form 4
Jan 5	Chi-Hong Ju Senior VP, Systems & GM, Asia	SoldNo plan	7,728	$75.58	584K	4.8%	Form 4
Dec 30, 2025	Chi-Hong Ju Senior VP, Systems & GM, Asia	SoldNo plan	7,945	$70.25	558K	5.0%	Form 4
Dec 26, 2025	Christopher B Paisley Director	SoldNo plan	500	$72.18	36K	1.2%	Form 4
Dec 17, 2025 – Dec 18, 2025	John Alexander Young CFO	SoldNo plan 2 parts	6,370	$72.50 average	462K	5.8%	Form 4
Dec 17, 2025	Chan W Lee Chief Operations Officer	SoldNo plan	2,406	$71.82	173K	1.9%	Form 4
Dec 17, 2025	Chi-Hong Ju Senior VP, Systems & GM, Asia	SoldNo plan	1,342	$71.82	96K	0.8%	Form 4
Dec 17, 2025	Feng-Ming Wang CEO	SoldNo plan	4,950	$71.82	356K	0.6%	Form 4
Dec 16, 2025	Elizabeth M Schwarting Director	SoldNo plan	624	$72.38	45K	8.5%	Form 4
Oct 13, 2025 – Oct 14, 2025	Chi-Hong Ju Senior VP, Systems & GM, Asia	SoldNo plan 2 parts	11,213	$81.11 average	909K	6.3%	Form 4
Oct 6, 2025	Elizabeth M Schwarting Director	SoldNo plan	2,664	$85.38	227K	27%	Form 4
Sep 17, 2025	John Alexander Young CFO	SoldNo plan	2,566	$79.43	204K	2.3%	Form 4
Sep 17, 2025	Chan W Lee Chief Operating Officer	SoldNo plan	1,947	$79.43	155K	1.5%	Form 4
Sep 17, 2025	Leslie Kohn Chief Technology Officer	SoldNo plan	2,249	$79.43	179K	0.2%	Form 4
Sep 17, 2025	Chi-Hong Ju Sr. Vice President, Systems	SoldNo plan	1,168	$79.43	93K	0.7%	Form 4
Sep 17, 2025	Feng-Ming Wang CEO	SoldNo plan	4,928	$79.43	391K	0.6%	Form 4
Sep 10, 2025	Yun-Lung Chen VP, Business Development	SoldNo plan	8,492	$84.42	717K	12%	Form 4
Jun 25, 2025	Christopher B Paisley Director	Sold10b5-1 plan	1,000	$62.58	63K	2.5%	Form 4

Sep 2510b5-1 plan
Christopher B Paisley
Director · sold 250 at $70.76
18K
0.6% of stake
Sep 1810b5-1 plan
John Alexander Young
CFO · sold 1,896 at $67.28
128K
1.7% of stake
Sep 17No plan
Feng-Ming Wang
CEO · sold 6,086 at $64.83
395K
0.8% of stake
Sep 17No plan
Chi-Hong Ju
Senior VP, Systems & GM · sold 2,009 at $64.83
130K
1.2% of stake
Sep 17No plan
Chan W Lee
Chief Operations Officer · sold 2,893 at $64.83
188K
1.8% of stake
Sep 17No plan
John Alexander Young
CFO · sold 3,126 at $64.83
203K
2.8% of stake
Jul 9No plan
Yun-Lung Chen
VP, Business Dev. & Marketing · sold 5,958 at $78.66
469K
9.0% of stake
Jul 1No plan
Chi-Hong Ju
Senior VP, Systems & GM · sold 10,000 at $88.84
888K
5.7% of stake
Jul 110b5-1 plan
Feng-Ming Wang
CEO · sold 16,250 at $90.08
$1.46M
2.1% of stake
Jun 2610b5-1 plan
Christopher B Paisley
Director · sold 250 at $62.01
16K
0.6% of stake
Jun 1710b5-1 plan
John Alexander Young
CFO · sold 5,033 at avg $67.54
340K
4.3% of stake
Jun 17No plan
Chan W Lee
Chief Operations Officer · sold 2,951 at $67.87
200K
1.8% of stake
Jun 17No plan
Chi-Hong Ju
Senior VP, Systems & GM · sold 2,017 at $67.87
137K
1.1% of stake
Jun 17No plan
Feng-Ming Wang
CEO · sold 6,204 at $67.87
421K
0.8% of stake
Jun 12No plan
Yun-Lung Chen
VP, Business Development and · sold 9,856 at $67.06
661K
13% of stake
May 2610b5-1 plan
John Alexander Young
CFO · sold 400 at $96.00
38K
0.3% of stake
May 2610b5-1 plan
Feng-Ming Wang
CEO · sold 32,500 at avg $91.01
$2.96M
3.9% of stake
Apr 2110b5-1 plan
John Alexander Young
CFO · sold 1,971 at $60.00
118K
1.6% of stake
Mar 17 – 19No plan
John Alexander Young
CFO · sold 7,615 at avg $53.32
406K
6.0% of stake
Mar 17 – 19No plan
Chan W Lee
Chief Operations Officer · sold 10,370 at avg $53.25
552K
6.1% of stake
Mar 17 – 19No plan
Chi-Hong Ju
Senior VP, Systems & GM, Asia · sold 6,884 at avg $53.20
366K
3.8% of stake
Mar 17 – 19No plan
Feng-Ming Wang
CEO · sold 27,059 at avg $53.18
$1.44M
3.1% of stake
Mar 210b5-1 plan
Feng-Ming Wang
CEO · sold 50,000 at avg $60.80
$3.04M
5.7% of stake
Jan 5No plan
Chi-Hong Ju
Senior VP, Systems & GM, Asia · sold 7,728 at $75.58
584K
4.8% of stake
Dec 30, 2025No plan
Chi-Hong Ju
Senior VP, Systems & GM, Asia · sold 7,945 at $70.25
558K
5.0% of stake
Dec 26, 2025No plan
Christopher B Paisley
Director · sold 500 at $72.18
36K
1.2% of stake
Dec 17, 2025 – Dec 18, 2025No plan
John Alexander Young
CFO · sold 6,370 at avg $72.50
462K
5.8% of stake
Dec 17, 2025No plan
Chan W Lee
Chief Operations Officer · sold 2,406 at $71.82
173K
1.9% of stake
Dec 17, 2025No plan
Chi-Hong Ju
Senior VP, Systems & GM, Asia · sold 1,342 at $71.82
96K
0.8% of stake
Dec 17, 2025No plan
Feng-Ming Wang
CEO · sold 4,950 at $71.82
356K
0.6% of stake
Dec 16, 2025No plan
Elizabeth M Schwarting
Director · sold 624 at $72.38
45K
8.5% of stake
Oct 13, 2025 – Oct 14, 2025No plan
Chi-Hong Ju
Senior VP, Systems & GM, Asia · sold 11,213 at avg $81.11
909K
6.3% of stake
Oct 6, 2025No plan
Elizabeth M Schwarting
Director · sold 2,664 at $85.38
227K
27% of stake
Sep 17, 2025No plan
John Alexander Young
CFO · sold 2,566 at $79.43
204K
2.3% of stake
Sep 17, 2025No plan
Chan W Lee
Chief Operating Officer · sold 1,947 at $79.43
155K
1.5% of stake
Sep 17, 2025No plan
Leslie Kohn
Chief Technology Officer · sold 2,249 at $79.43
179K
0.2% of stake
Sep 17, 2025No plan
Chi-Hong Ju
Sr. Vice President, Systems · sold 1,168 at $79.43
93K
0.7% of stake
Sep 17, 2025No plan
Feng-Ming Wang
CEO · sold 4,928 at $79.43
391K
0.6% of stake
Sep 10, 2025No plan
Yun-Lung Chen
VP, Business Development · sold 8,492 at $84.42
717K
12% of stake
Jun 25, 202510b5-1 plan
Christopher B Paisley
Director · sold 1,000 at $62.58
63K
2.5% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch AMBA, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

AMBA is in 79 US ETFs. The largest of them, with AMBA's weight in each:

Spot a number that looks wrong? Check it in AMBA's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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