ALGM Allegro Microsystems (ALGM) Insider Trading, Ownership & Congress Trades
Semiconductors & Electronics · Semiconductors & related devices · CIK 0000866291
Congress · 1Form 144 · 2
Insider buyers, 180 days
0
Funds added, last quarter
221
13F, latest reported quarter
What the filings say about ALGM
Insiders, 180 days
-$3.6M net sold
9 sellers · 0% of sales under a 10b5-1 plan
Congress, 1 year
1 bought · 0 sold
Latest: purchase, 2026-09-29
Planned sales (Form 144), 90 days
$146.8K
2 notices
Allegro Microsystems insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, ALLEGRO MICROSYSTEMS, INC. insiders sold a net $3.6M of stock across 125 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-28.
Insider
Filed
Shares
Value
Since filing
Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 7.2% of the 13,976 shares held after it.
- 1 other insider sold within 30 days.
- 221 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Raubacher Jennie sold about $45.3K of ALGM on Aug 17, 2026; 1 other insider sold within 30 days and 221 funds added in the latest 13F quarter.Context
- 2 earlier Form 4 trades (code P or S) here by this insider (2 sales), the last on Mar 2, 2026.
- The trade is 7.4% of the 31,052 shares held after it.
- 1 other insider sold within 30 days.
- 221 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP, CHRO Hagen Erin sold about $101.4K of ALGM on Aug 10, 2026; 1 other insider sold within 30 days and 221 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 7.2% of the 69,687 shares held after it.
- 6 other insiders sold within 30 days.
- 221 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP, Worldwide Sales Madormo Richard sold about $263.6K of ALGM on Jun 3, 2026; 6 other insiders sold within 30 days and 221 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 5.8% of the 77,476 shares held after it.
- 6 other insiders sold within 30 days.
- 221 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP, General Manager, Products Coleman Troy sold about $205.7K of ALGM on May 22, 2026; 6 other insiders sold within 30 days and 221 funds added in the latest 13F quarter.Context
- 1 earlier Form 4 trade (code P or S) here by this insider (1 sale), the last on Aug 22, 2025.
- The trade is 39.8% of the 13,106 shares held after it.
- 6 other insiders sold within 30 days.
- 221 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: VP, Chief Accounting Officer Webster Roald Graham sold about $234.2K of ALGM on May 21, 2026; 6 other insiders sold within 30 days and 221 funds added in the latest 13F quarter.125 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$3.6M over 180 days
-$146.8K over 90 days
more than 55% of Semiconductors & Electronics
Congress
1 member bought in the last year
the lowest in Semiconductors & Electronics
Funds
221 funds bought in last quarter
more than 64% of Semiconductors & Electronics
Revenue
+22.8% year over year
more than 65% of Semiconductors & Electronics
Margin
-1.7% net margin
more than 50% of Semiconductors & Electronics
Buybacks
no share repurchases reported
Short interest
8.3% of the float short (float per yahoo 2026-10-27) · 3.4 days to cover · settled 2026-10-15
more than 59% of Semiconductors & Electronics
What changed in the last 30 days
Oct 12Rep. Gilbert Cisneros sold $1.0K to $15K, disclosed 13 days after the trade
Why it matters
House members report a bracket, not an exact amount, and have 45 days to do it; the trade is weeks old when it becomes public.
Watch ALGM
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
+9.6%12M
Insider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns ALGM: institutional holders (13F)
13F holdings, latest reported quarter
25,581,021 sh
$1.8B
13,889,324 sh
$967.0M
13,678,393 sh
$952.3M
12,723,790 sh
$844.9M
12,006,396 sh
$835.9M
Congress trades in ALGM
STOCK Act disclosures, US House only, filed up to 45 days after the trade
Bought 2026-09-29 · disclosed 13 days later
$1,001 - $15,000
Bought 2024-10-17 · disclosed 20 days later
$1,001 - $15,000
Sold 2024-09-16 · disclosed 17 days later
$1,001 - $15,000
Bought 2024-01-11 · disclosed 35 days later
$1,001 - $15,000
Sold 2023-12-11 · disclosed 27 days later
$1,001 - $15,000
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
ALGM planned insider sales (Form 144)
Notice of intent to sell, filed before any sale
Raubacher Jennie
Filed 2026-08-17
$45.3K
Hagen Erin
Filed 2026-08-10
$101.4K
ALGM mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
First Trust NASDAQ Clean Edge Green Energy Index Fund
$32.1M position · as of 2026-06-30
3.8%
Fidelity Electric Vehicles and Future Transportation ETF
$1.0M position · as of 2026-06-30
3.6%
ClearBridge Variable Small Cap Growth Portfolio
$15.7M position · as of 2026-06-30
3.4%
State Street(R) SPDR(R) S&P(R) Semiconductor ETF
$114.5M position · as of 2026-06-30
3.3%
Invesco Small Cap Growth Fund
$49.7M position · as of 2026-06-30
2.7%
Loomis Sayles Small/Mid Cap Growth Fund
$6.6M position · as of 2026-06-30
2.7%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return · Nargolwala
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2023
$7.0M
-$4.3M
$2.3M
+7%
+58%
2022
$10.1M
$22.7M
$3.3M
+171%
+41%
2020
$6.5M
$52.3M
$2.1M
+43%
+36%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $3.6M sold by insiders over 180 days, 221 funds added last quarter, 1 House member(s) bought in 12 months, disclosed weeks after the trade, $146.8K in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
ALGM financials
Revenue growth
+22.8%
XBRL, annual
Net margin
-1.7%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$945.9M
four quarters, 2025-06-28 to 2026-06-26
Revenue, TTM ALGM
| FY Mar 2026 | $890.1M |
| FY Mar 2025 | $725.0M |
| FY Mar 2024 | $1.0B |
| FY Mar 2023 | n/a |
| FY Mar 2022 | $768.7M |
| Jun 2026 | $259.2M |
| Mar 2026 | $243.2M |
| Dec 2025 | $229.2M |
| Sep 2025 | $214.3M |
| Jun 2025 | $203.4M |
| Mar 2025 | $192.8M |
| Dec 2024 | $177.9M |
| Sep 2024 | $187.4M |
At each fiscal year end
Single quarter
Net margin, TTM
+1.5%
net income over revenue, 2025-06-28 to 2026-06-26
Net margin, TTM ALGM
| FY Mar 2026 | -1.6% |
| FY Mar 2025 | -10.0% |
| FY Mar 2024 | +14.6% |
| FY Mar 2023 | n/a |
| FY Mar 2022 | +15.6% |
| Jun 2026 | +6.1% |
| Mar 2026 | -6.7% |
| Dec 2025 | +3.6% |
| Sep 2025 | +3.0% |
| Jun 2025 | -6.5% |
| Mar 2025 | -7.5% |
| Dec 2024 | -3.9% |
| Sep 2024 | -18.0% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$87.8M
operating cash flow minus capex, 2025-06-28 to 2026-06-26
Free cash flow, TTM ALGM
| FY Mar 2026 | $124.9M |
| FY Mar 2025 | $22.0M |
| FY Mar 2024 | $56.9M |
| FY Mar 2023 | $113.4M |
| FY Mar 2022 | $86.2M |
| Jun 2026 | $14.0M |
| Mar 2026 | $18.7M |
| Dec 2025 | $41.3M |
| Sep 2025 | $13.9M |
| Jun 2025 | $51.0M |
| Mar 2025 | $15.0M |
| Dec 2024 | -$21.8M |
| Sep 2024 | $5.6M |
At each fiscal year end
Single quarter
Debt to equity
0.30x
long-term 2026-06-26 plus current 2026-06-26; equity 2026-06-26
Debt to equity ALGM
| FY Mar 2026 | 0.30x |
| FY Mar 2025 | 0.37x |
| FY Mar 2024 | 0.22x |
| FY Mar 2023 | 0.03x |
| FY Mar 2022 | 0.03x |
| Jun 2026 | 0.30x |
| Mar 2026 | 0.30x |
| Dec 2025 | 0.30x |
| Sep 2025 | 0.30x |
| Jun 2025 | 0.34x |
| Mar 2025 | 0.37x |
| Dec 2024 | 0.40x |
| Sep 2024 | 0.43x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
0.43x
TTM operating cash flow over long-term 2026-06-26 plus current 2026-06-26
Cash flow to debt ALGM
| FY Mar 2026 | 0.57x |
| FY Mar 2025 | 0.18x |
| FY Mar 2024 | 0.72x |
| FY Mar 2023 | 7.73x |
| FY Mar 2022 | 6.25x |
| Jun 2026 | 0.43x |
| Mar 2026 | 0.57x |
| Dec 2025 | 0.51x |
| Sep 2025 | 0.33x |
| Jun 2025 | 0.29x |
| Mar 2025 | 0.18x |
| Dec 2024 | 0.14x |
| Sep 2024 | 0.34x |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+1.5%
TTM net income over average of 2025-06-27 and 2026-06-26
Return on equity ALGM
| FY Mar 2026 | -1.6% |
| FY Mar 2025 | -7.1% |
| FY Mar 2024 | +14.6% |
| FY Mar 2023 | +22.0% |
| FY Mar 2022 | +18.1% |
| Jun 2026 | +1.5% |
| Mar 2026 | -1.6% |
| Dec 2025 | -1.4% |
| Sep 2025 | -3.0% |
| Jun 2025 | -6.7% |
| Mar 2025 | -7.1% |
| Dec 2024 | -6.3% |
| Sep 2024 | -2.5% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+1.0%
TTM net income over average of 2025-06-27 and 2026-06-26
Return on assets ALGM
| FY Mar 2026 | -1.0% |
| FY Mar 2025 | -4.9% |
| FY Mar 2024 | +11.3% |
| FY Mar 2023 | +18.1% |
| FY Mar 2022 | +14.6% |
| Jun 2026 | +1.0% |
| Mar 2026 | -1.0% |
| Dec 2025 | -0.9% |
| Sep 2025 | -2.0% |
| Jun 2025 | -4.8% |
| Mar 2025 | -4.9% |
| Dec 2024 | -4.3% |
| Sep 2024 | -1.8% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
n/a
effective tax rate -15%, not meaningful
Return on invested capital ALGM
| FY Mar 2026 | n/a |
| FY Mar 2025 | n/a |
| FY Mar 2024 | +15.1% |
| FY Mar 2023 | +32.3% |
| FY Mar 2022 | +26.1% |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
+3.7%
operating income (EBIT proxy) over average of 2025-06-27 and 2026-06-26 minus current liabilities
Return on capital employed ALGM
| FY Mar 2026 | +1.4% |
| FY Mar 2025 | -1.5% |
| FY Mar 2024 | +16.2% |
| FY Mar 2023 | +22.5% |
| FY Mar 2022 | +19.3% |
| Jun 2026 | +3.7% |
| Mar 2026 | +1.4% |
| Dec 2025 | -0.0% |
| Sep 2025 | -0.7% |
| Jun 2025 | -0.9% |
| Mar 2025 | -1.5% |
| Dec 2024 | +0.7% |
| Sep 2024 | +3.7% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
566.33x
close 2026-10-27 over four quarters of diluted EPS, 2025-06-28 to 2026-06-26
P/E, trailing ALGM
| FY Mar 2026 | n/a |
| FY Mar 2025 | n/a |
| FY Mar 2024 | 34.56x |
| FY Mar 2023 | 49.99x |
| FY Mar 2022 | 47.84x |
| Jun 2026 | 964.83x |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$6.5B
market value at close 2026-10-27 on 2026-07-27 shares, plus long-term 2026-06-26 plus current 2026-06-26, minus cash 2026-06-26
Enterprise value ALGM
| FY Mar 2026 | $5.7B |
| FY Mar 2025 | $4.8B |
| FY Mar 2024 | $5.2B |
| FY Mar 2023 | $8.9B |
| FY Mar 2022 | $5.3B |
| Jun 2026 | $10.9B |
| Mar 2026 | $5.7B |
| Dec 2025 | $5.1B |
| Sep 2025 | $5.7B |
| Jun 2025 | $6.5B |
| Mar 2025 | $4.8B |
| Dec 2024 | $4.3B |
| Sep 2024 | $4.9B |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+1.4%
TTM free cash flow over market value at close 2026-10-27
FCF yield ALGM
| FY Mar 2026 | +2.2% |
| FY Mar 2025 | +0.5% |
| FY Mar 2024 | +1.1% |
| FY Mar 2023 | +1.2% |
| FY Mar 2022 | +1.6% |
| Jun 2026 | +0.8% |
| Mar 2026 | +2.2% |
| Dec 2025 | +2.4% |
| Sep 2025 | +1.1% |
| Jun 2025 | +0.8% |
| Mar 2025 | +0.5% |
| Dec 2024 | +0.1% |
| Sep 2024 | +1.4% |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
n/a
prior-year trailing EPS was a loss, growth undefined
PEG, trailing ALGM
| FY Mar 2026 | n/a |
| FY Mar 2025 | n/a |
| FY Mar 2024 | n/a |
| FY Mar 2023 | 0.87x |
| FY Mar 2022 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-27. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2026-03 | 2025-03 | 2024-03 | 2023-03 | |
|---|---|---|---|---|
| Revenue | $890.1M | $725.0M | $1.0B | $973.7M |
| Gross profit | $412.0M | $321.5M | $574.5M | $546.1M |
| Operating income | $18.5M | -$19.8M | $196.2M | $203.3M |
| Net income | -$14.7M | -$72.8M | $152.9M | $187.4M |
| EPS (diluted) | -0.08 | -0.39 | 0.78 | 0.97 |
| Operating cash flow | $163.1M | $61.9M | $181.7M | $193.2M |
| Cash | $168.8M | $121.3M | $212.1M | $351.6M |
| Long-term debt | $285.7M | $344.7M | $249.6M | $25.0M |
| Buybacks | $0 | $853.9M | $0 | $0 |
| Dividends paid | n/a | n/a | n/a | $0 |
SEC XBRL, fiscal years, as known on 2026-10-28
ALGM Stock Sonar score 6/7 axes
Find similar shapesCompareALGM ranks highest on growth (65th percentile) and institutional and government (62nd), and lowest on risk and compliance (26th), among Semiconductors & Electronics peers.
6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
ALGM filings, in plain words
Are Allegro Microsystems insiders buying or selling ALGM?
In the 180 days to 2026-10-28, Allegro Microsystems insiders were net sellers, a net $3.6M across purchases and sales reported on Form 4, by 9 sellers.
Have members of Congress traded ALGM?
Yes. In the year to 2026-10-28, 1 House member disclosed buying ALGM and 0 House members disclosed selling it; the latest on record is a purchase by Gilbert Cisneros dated 2026-09-29.
Are there planned insider sales of ALGM?
Yes. 2 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-28, covering $146.8K of stock; the latest, by Raubacher Jennie, was filed 2026-08-17.
Read the full summary
In the 180 days to 2026-10-28, Allegro Microsystems insiders were net sellers of ALGM, a net $3.6M across purchases and sales reported on Form 4 by 9 sellers. None of the 9 insider sales was flagged as made under a Rule 10b5-1 plan. In the year to 2026-10-28, 1 member of Congress disclosed buying ALGM and 0 members disclosed selling it; the latest on record is a purchase by Gilbert Cisneros dated 2026-09-29. Insiders filed 2 Form 144 notices of intent to sell in the 90 days to 2026-10-28, covering $146.8K of stock. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.
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