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ACET · Adicet Bio, Inc.
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ACET Adicet Bio (ACET) Insider Trading, Ownership & Congress Trades

Pharma & Biotech · Pharmaceutical preparations · CIK 0001720580
Quote by TradingView
SEC filings
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
30
13F, latest reported quarter

Adicet Bio insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

No insider purchases or sales are on record for Adicet Bio, Inc. in the period covered. Source: SEC Form 4 filings, as of 2026-10-27.

Insider
Filed
Shares
Value
Since filing
OrbiMed Advisors Israel II Ltd
SELL
2026-04-09 SECtraded 2026-04-08
32,523
$204.6K
-41.7%
Context
  • 5 earlier Form 4 trades (code P or S) here by this insider (3 buys, 2 sales), the last on Apr 7, 2026.
  • No other insider sold within 30 days.
  • 30 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider OrbiMed Advisors Israel II Ltd sold about $204.6K of ACET on Apr 8, 2026, the largest insider sale at the company since 2022; 30 funds added in the latest 13F quarter.
OrbiMed Advisors Israel II Ltd
SELL
2026-04-09 SECtraded 2026-04-08
40,416
$263.5K
-41.7%
Context
  • 5 earlier Form 4 trades (code P or S) here by this insider (3 buys, 2 sales), the last on Apr 7, 2026.
  • No other insider sold within 30 days.
  • 30 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider OrbiMed Advisors Israel II Ltd sold about $263.5K of ACET on Apr 8, 2026, the largest insider sale at the company since 2022; 30 funds added in the latest 13F quarter.
OrbiMed Advisors Israel II Ltd
SELL
2026-04-09 SECtraded 2026-04-07
29,319
$191.5K
-41.7%
Context
  • 3 earlier Form 4 trades (code P or S) here by this insider (3 buys), the last on Jan 25, 2024.
  • The trade is 84.0% of the 34,923 shares held after it.
  • No other insider sold within 30 days.
  • 30 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider OrbiMed Advisors Israel II Ltd sold about $191.5K of ACET on Apr 7, 2026, the largest insider sale at the company since 2022; 30 funds added in the latest 13F quarter.
OrbiMed Advisors Israel II Ltd
SELL
2026-04-09 SECtraded 2026-04-07
2,400
$15.3K
-41.7%
Context
  • 3 earlier Form 4 trades (code P or S) here by this insider (3 buys), the last on Jan 25, 2024.
  • The trade is 7.4% of the 32,523 shares held after it.
  • No other insider sold within 30 days.
  • 30 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider OrbiMed Advisors Israel II Ltd sold about $15.3K of ACET on Apr 7, 2026, the largest insider sale at the company since 2023; 30 funds added in the latest 13F quarter.
RA Capital Healthcare Fund LP
BUY
2026-04-13 SECtraded 2026-02-20
74,751
$543.4K
-43.7%
Context
  • 2 earlier Form 4 trades (code P or S) here by this insider (2 buys), the last on Feb 19, 2026.
  • +3.5% median (+3.5% mean) 90-day return after 2 previous buys.
  • The trade is 6.3% of the 1,182,624 shares held after it.
  • No other insider bought within 30 days.
  • 30 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider RA Capital Healthcare Fund LP bought about $543.4K of ACET on Feb 20, 2026; 30 funds added in the latest 13F quarter.
60 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.
See all insider buying · insider selling
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Seven facts, ranked against the sector · Rank is not a forecast
Insiders
no insider buys or sells on file
Congress
no House purchase disclosed in the last 12 months
Funds
30 funds bought in last quarter
below 62% of Pharma & Biotech
Revenue
no revenue reported in any filing
Margin
no margin: no revenue reported
Buybacks
no share repurchases reported
Short interest
6.5% of the float short (float per yahoo 2026-10-26) · 1.1 days to cover · settled 2026-09-30
more than 52% of Pharma & Biotech
What changed in the last 30 days
Nothing new filed in the last 30 days

Watch ACET

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.
-73.0%12M
-73%-49%-24%+0%2025-102025-122026-022026-042026-062026-082026-10 2026-02-20 · RA Capital Healthcare Fund LP bought $543.4K2026-02-19 · RA Capital Healthcare Fund LP bought $535.5K2026-02-18 · RA Capital Healthcare Fund LP bought $525.0K2026-04-08 · OrbiMed Advisors Israel II Ltd sold $263.5K2026-04-08 · OrbiMed Advisors Israel II Ltd sold $204.6K2026-04-07 · OrbiMed Advisors Israel II Ltd sold $191.5K2026-04-07 · OrbiMed Advisors Israel II Ltd sold $15.3K
Insider buyInsider sell
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns ACET: institutional holders (13F)

13F holdings, latest reported quarter
RA CAPITAL MANAGEMENT, L.P.
932,624 sh
$8.1M
ORBIMED ADVISORS LLC
844,787 sh
$7.3M
FRANKLIN RESOURCES INC
626,571 sh
$5.4M
Stonepine Capital Management, LLC
491,036 sh
$4.2M
CITADEL ADVISORS LLC
432,738 sh
$3.7M

Congress trades in ACET

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

ACET planned insider sales (Form 144)

No planned-sale notices
No insider has filed to sell. Watch this after a run-up.

ACET mutual fund holders (N-PORT)

Funds ranked by the share of their own portfolio in this stock (N-PORT).
Ultra-Small Company Fund
$742.7K position · as of 2026-06-30
0.8%
Franklin Biotechnology Discovery Fund
$2.1M position · as of 2026-07-31
0.2%
iShares Micro-Cap ETF
$206.8K position · as of 2026-06-30
0.0%
1290 VT Micro Cap Portfolio
$13.8K position · as of 2026-06-30
0.0%
U.S. MICRO CAP PORTFOLIO
$129.9K position · as of 2026-07-31
0.0%
Fidelity Extended Market Index Fund
$444.6K position · as of 2026-05-31
0.0%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M · % is the share of the fund's own portfolio
Executive pay vs shareholder return
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
2025
$1.5M
$347.8K
$1.0M
-94%
n/a
2024
$4.6M
$2.5M
$1.6M
-89%
n/a
2023
$6.0M
-$498.1K
$2.1M
-79%
n/a
2022
$4.0M
-$3.6M
$2.2M
-55%
n/a
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
The complete filing record, in one place.
The record shows 30 funds added last quarter. Each figure is a federal filing, dated the day it went public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector by SEC SIC code
UTHRCPIXMRNAREGNLLYALNYMDGLCITRDNAVRTXNUVLTWST

ACET financials

Ratios from the company's XBRL filings, latest filings
Revenue, TTM
n/a
fewer than four consecutive quarters of revenue filed
Net margin, TTM
n/a
needs four consecutive quarters of both revenue and net income
Free cash flow, TTM
-$85.0M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Debt to equity
n/a
no debt line filed
Cash flow to debt
n/a
no debt line filed
Return on equity
-78.1%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets
-63.6%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on invested capital
n/a
pre-tax loss, no effective tax rate to apply
Return on capital employed
-75.1%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
P/E, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Enterprise value
n/a
no debt line filed
FCF yield
-230.4%
TTM free cash flow over market value at close 2026-10-26
PEG, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Price as of 2026-10-26. 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.
2025-122024-122023-122022-12
Operating income-$122.1M-$127.6M-$152.0M-$72.6M
Net income-$116.8M-$117.1M-$142.7M-$69.8M
EPS (diluted)-16.95-21.33-3.31-1.70
Operating cash flow-$95.2M-$92.4M-$93.7M-$44.8M
Cash$38.9M$56.5M$159.7M$257.7M
SEC XBRL, fiscal years, as known on 2026-10-27

ACET Stock Sonar score 3/7 axes

Find similar shapesCompare

ACET ranks highest on risk and compliance (51st percentile) and institutional and government (38th), and lowest on profitability (37th), among Pharma & Biotech peers.

Profitability
37
Inputs
  • Return on equity-78.1% · 40 pct, sector of 545
  • Return on assets-63.6% · 37 pct, sector of 691
  • Return on invested capitalpre-tax loss, no effective tax rate to apply
  • Return on capital employed-75.1% · 34 pct, sector of 576
Institutional and government
38
Inputs
  • Funds adding, latest quarter30 · 38 pct, sector of 698
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quartersno lobbying filings in the last four quarters
Risk and compliance
51
Inputs
  • Short interest, % of float+6.5% · 51 pct, sector of 813
  • Recalls per $1B revenue, 3yrevenue under $50M or not filed, so a count cannot be scaled to size
  • EPA cases per $1B revenue, 5yrevenue under $50M or not filed, so a count cannot be scaled to size
  • New text in Risk Factors, latest 10-Kneeds two 10-Ks with a Risk Factors section (not 20-F filers or stubs)
4 not measured: Financial health, Growth, Insider conviction, US patents
  • Financial health needs 1 of 2 inputs, 0 present: no debt line filed
  • Growth needs 1 of 2 inputs, 0 present: no backlog line filed, or no year-earlier backlog; no revenue for this year and the year before
  • Insider conviction needs 1 of 2 inputs, 0 present: no Form 4 purchase or sale (code P or S) in 180 days; no insider trades in 180 days
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

3 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

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