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ABOS · Acumen Pharmaceuticals, Inc.
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TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475
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ABOS

Acumen Pharmaceuticals, Inc.
PHARMA & BIOTECH · BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES) · CIK 0001576885
SEC FILINGS☆ WATCH
INSIDER NET · 180D
-$89.7K
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
0
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
52
13F, latest reported quarter
REVENUE GROWTH
-
XBRL, annual
NET MARGIN
-
CONVERSIONS · 180D
2
codes C/M, not in net · $20.9K priced
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net -$89.7K over 180 days
-$89.7K over 90 days
more than 56% of Pharma & Biotech
CONGRESS
no member of Congress has reported trading it
FUNDS
52 funds added or opened last quarter
below 54% of Pharma & Biotech
REVENUE
no revenue reported in any filing
MARGIN
no margin: this company reports no revenue to divide by
BUYBACKS
no share repurchases reported
SHORT
4.7% of shares outstanding short · 9.5 days to cover · settled 2026-07-31
more than 51% of Pharma & Biotech
THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET
52 funds added or opened positions in the latest 13F quarter, of 98 holders.
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN +127.2%
+127.2%12M
-10%+43%+95%+148%2025-092025-102025-122026-032026-052026-072026-09 2026-01-07 · OConnell Daniel Joseph sold $75.1K2026-01-08 · Meisner Derek M sold $54.8K2026-01-26 · Meisner Derek M sold $45.3K2026-06-17 · Porter Derrell sold $30.4K2026-06-16 · Porter Derrell sold $29.8K2026-02-27 · Meisner Derek M sold $28.3K2026-01-09 · OConnell Daniel Joseph sold $22.8K2026-01-07 · Meisner Derek M sold $20.0K2026-01-21 · OConnell Daniel Joseph sold $16.9K2026-06-15 · Porter Derrell sold $15.2K2026-01-08 · OConnell Daniel Joseph sold $14.8K2026-01-12 · Meisner Derek M sold $14.6K2026-06-09 · Fountain Nathan B sold $14.3K2026-01-06 · Meisner Derek M sold $14.0K2026-01-06 · Siemers Eric sold $13.5K2026-01-08 · Zuga Matt sold $12.5K2026-01-08 · Meisner Derek M sold $12.4K2026-01-08 · Doherty James J. sold $11.8K2026-01-23 · Meisner Derek M sold $10.7K2026-01-06 · OConnell Daniel Joseph sold $10.1K2026-01-06 · Zuga Matt sold $10.0K2026-01-12 · OConnell Daniel Joseph sold $9.3K2026-01-05 · OConnell Daniel Joseph sold $9.2K2026-01-09 · Meisner Derek M sold $9.2K2026-01-07 · Zuga Matt sold $8.2K2026-01-28 · Meisner Derek M sold $8.0K2026-01-05 · Zuga Matt sold $7.8K2026-01-05 · Siemers Eric sold $7.8K2026-01-05 · Meisner Derek M sold $7.8K2026-01-05 · Barton Russell sold $7.8K2026-01-06 · Meisner Derek M sold $7.5K2026-01-06 · Barton Russell sold $7.1K2026-03-06 · Meisner Derek M sold $6.8K2026-01-08 · Barton Russell sold $6.6K2026-01-22 · OConnell Daniel Joseph sold $5.1K2026-01-21 · Zuga Matt sold $4.5K2026-01-21 · Siemers Eric sold $4.2K2026-01-21 · Barton Russell sold $4.2K2026-01-21 · Meisner Derek M sold $4.1K2026-01-07 · Doherty James J. sold $3.4K2026-01-07 · Zuga Matt sold $3.4K2026-01-07 · Meisner Derek M sold $3.4K
INSIDER SELL
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
The complete filing record, in one place.
The record shows a net $89.7K sold by insiders over 180 days, 52 funds added last quarter. Every figure is a federal filing, dated the day it became public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
UTHRCPIXMRNAREGNLLYALNYELFCITRMDGLDNAVRTXNUVL
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, Acumen Pharmaceuticals, Inc. insiders sold a net $89.7K of stock across 75 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-04.

INSIDER
FILED
SHARES
VALUE
Porter Derrell
Director
SELL
2026-06-17
13,040.0
$30.4K
Porter Derrell
Director
SELL
2026-06-16
12,800.0
$29.8K
Porter Derrell
Director
SELL
2026-06-15
6,460.0
$15.2K
Fountain Nathan B
Director
SELL
2026-06-09
6,400.0
$14.3K
Meisner Derek M
Chief Legal Officer & Corp Sec
SELL
2026-03-06
2,090.0
$6.8K
75 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 70 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders
13F · holdings as of the latest quarter funds have reported
RA CAPITAL MANAGEMENT, L.P.
20,992,669.0 sh
$56.1M
Sands Capital Alternatives, LLC
3,720,105.0 sh
$9.9M
BlackRock, Inc.
2,490,115.0 sh
$6.6M
Alyeska Investment Group, L.P.
2,454,754.0 sh
$6.6M
FRANKLIN RESOURCES INC
2,305,096.0 sh
$6.2M
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
FORM 144
No planned-sale notices
No insider has notified an intent to sell. This is the panel to watch after a run-up.
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
Ultra-Small Company Fund
$177.0K POSITION · AS OF 2026-03-31
0.2%
Franklin Biotechnology Discovery Fund
$2.0M POSITION · AS OF 2026-04-30
0.2%
Ultra-Small Company Market Fund
$207.4K POSITION · AS OF 2026-03-31
0.2%
Select Health Care Portfolio
$3.6M POSITION · AS OF 2026-02-28
0.1%
VIP Health Care Portfolio
$225.4K POSITION · AS OF 2026-03-31
0.0%
iShares Micro-Cap ETF
$229.2K POSITION · AS OF 2026-03-31
0.0%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Clinical pipeline
ClinicalTrials.gov · 3 registered trials, 1 still enrolling or running — a status change here is dated weeks before the press release
2
Phase 1
0 ACTIVE
1
Phase 2
1 ACTIVE
TRIALS MATCHED TO THIS TICKER BY SPONSOR NAME · STUDIES RUN UNDER A SUBSIDIARY'S OWN NAME ARE NOT INCLUDED
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
OPERATING INCOME$-123.8M$-114.0M$-61.1M$-45.2M
NET INCOME$-121.3M$-102.3M$-52.4M$-42.9M
EPS (DILUTED)-2.00-1.71-1.08-1.06
OPERATING CASH FLOW$-115.5M$-86.2M$-43.1M$-35.2M
CASH$54.0M$35.6M$66.9M$130.1M
LONG-TERM DEBT$22.4M$29.4M$29.9M$0
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-04 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

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© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-04 ALL SYSTEMS LIVE FOR MACHINES →