AmpliTech Group, Inc.

AMPG, AMPGR, AMPGZ · Communications Equipment, NEC · 25.3M shares · +40%/yr ↑ dilution · EDGAR filings ↗

Reference price $7.71 · est. market cap ~$195M — last insider sale, 2026-06-23 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)

Grade

D45

Tiny 5G/RF-components hypergrowth story with deep losses, cash burn, and low gross margin.

Strengths

Explosive growth off a small base — +165.0% (100th)

Risks

Deep losses — operating margin -29.1%, net margin -27.8%
Cash burn — FCF -$9.7M, FCF margin -38.5%
Low gross margin — 23.9% (13th)

Notable findings

Exec changeRecent 8-K item 5.02 8-K ↗
Net lossNet loss (net margin -27.8%)
Cash burnNegative free cash flow (-9.7M)
Customer concentration~97% of revenue from one customer/distributor — 97% of total sales for the year ending December 31, 2024
Fund exitedNotable fund(s) exited this quarter: VANGUARD GROUP INC
Chronic dilutionShare count +40%/yr over 4y (dilution, book value/share -71%)
Notable holderHeld by 3 notable fund(s): RENAISSANCE TECHNOLOGIES LLC, CITADEL ADVISORS LLC, STATE STREET CORP (as of 2026-03-31)
Insider sellingInsider selling — 5 open-market sale(s) by 3 insider(s) (cluster of 3 insiders, ~$588,218, last 6mo) Form 4 ↗

Quarterly revenue

2025-06-30 · $11M2025-09-30 · $6M2025-12-31 · $4M2026-03-31 · $5M

Last 4 quarters · from SEC filings.

Key metrics

Gross margin

23.9%

Operating margin

-29.1%

Net margin

-27.8%

Return on equity

-21.3%

Return on assets

-13.6%

Revenue growth (QoQ)

19.5%

Current ratio

1.7×

Free cash flow

-$10M

EBITDA

-$6M

Tangible book value

$15M

Cash & investments

$5M

Cash runway

Stock comp / revenue

2.2%

Insider transactions · last 18 months

Date	Insider	Type	Shares	Price
2026-06-23	Mazziota Daniel Richard	Sell	10K	$7.71
2026-06-22	Mazziota Daniel Richard	Sell	7.2K	$8.46
2026-06-01	Flores Jorge Luis	Option exercise	5.0K	$3.88
2026-06-01	Flores Jorge Luis	Option exercise	25K	$3.52
2026-06-01	Flores Jorge Luis	Sell	30K	$5.36
2026-05-28	Sanfratello Louisa	Option exercise	50K	$3.52
2026-05-28	Sanfratello Louisa	Sell	50K	$4.80
2026-05-22	Mazziota Daniel Richard	Sell	10K	$4.95
2026-01-30	Sanfratello Louisa	Option exercise	50K	$3.04
2026-01-30	Maqbool Fawad	Option exercise	50K	$3.04
2026-01-30	Flores Jorge Luis	Option exercise	50K	$3.04
2026-01-14	Maqbool Fawad	Option exercise	500	$4.00
2026-01-14	Flores Jorge Luis	Option exercise	1.0K	$4.00
2026-01-14	Mazziota Daniel Richard	Option exercise	2.0K	$4.00
2025-12-18	Modi Shailesh	Buy	2.0K	$2.90
2025-12-12	Modi Shailesh	Grant	15K	$3.08
2025-12-12	Mazziota Daniel Richard	Grant	15K	$3.08
2025-12-12	Lee Andrew Dylan	Grant	15K	$3.08
2025-06-20	Mazziota Daniel Richard	Buy	7.2K	$2.00
2025-04-08	Mazziota Daniel Richard	Buy	5.0K	$1.39

All non-derivative Form 4 activity (SEC), newest first.

Notable events (8-K)

Date	Items
2026-06-22	Other	filing ↗
2026-05-13	ResultsExhibits	filing ↗
2026-03-16	Exec/director change	filing ↗
2026-02-02	Material agreementExec/director changeReg FDExhibits	filing ↗
2026-01-26	Material agreementExec/director changeExhibits	filing ↗
2026-01-26	Reg FDExhibits	filing ↗
2026-01-12	OtherExhibits	filing ↗
2026-01-05	ResultsExhibits	filing ↗

Recent filings

Form	Filed	Period	Accession
8-K	2026-06-22	2026-06-22	0001493152-26-029585 ↗
10-Q	2026-05-13	2026-03-31	0001493152-26-022715 ↗
8-K	2026-05-13	2026-05-13	0001493152-26-022731 ↗
10-K	2026-03-26	2025-12-31	0001493152-26-012914 ↗
8-K	2026-03-16	2026-03-10	0001493152-26-010260 ↗
8-K	2026-02-02	2026-01-27	0001493152-26-004629 ↗
8-K	2026-01-26	2026-01-26	0001493152-26-003533 ↗
8-K	2026-01-26	2026-01-20	0001493152-26-003631 ↗
8-K	2026-01-12	2026-01-12	0001493152-26-001229 ↗
8-K	2026-01-05	2026-01-05	0001493152-26-000266 ↗
8-K	2025-12-15	2025-12-10	0001493152-25-027624 ↗
8-K	2025-12-11	2025-12-11	0001493152-25-027138 ↗