Porter Derrell
Director
SaleAlert
- Shares
- 13,040
- Price
- $2.33
- Value
- $30,318
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•39 filings
ABOS
Acumen Pharmaceuticals, Inc.
No net buying or selling imbalance over the last 3 months
No net buyers or sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
$0.00
0 buyers · 0 sellers
12-month purchases
$0.00
0 distinct insiders
12-month sales
$294,840
3 distinct insiders
Highlighted alerts
4
10 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
92
Raw transactions
Everything returned by the filing
14
Voluntary view
P/S trades after deterministic checks
78
Administrative noise
Stored, never alerted
52
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- S
- Shares
- 1,054
- Price
- $1.84
- Footnotes
- 4
Represents the number of shares sold by the Reporting Person through an automatic "sell to cover" transaction to satisfy tax withholding obligations in connection with the vesting of restricted stock units pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 15, 2024. The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $1.7600 to $1.8700. Upon request, the Reporting Person will provide to the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Represents the number of shares sold by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 29, 2025. The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $1.8800 to $1.9400. Upon request, the Reporting Person will provide to the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Raspberry interpretation
Informational — no alert
Reason: tax_withholding. The filing footnotes identify tax withholding. The trade is reported under a Rule 10b5-1 plan.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Porter Derrell
Director
SaleAlert
- Shares
- 12,800
- Price
- $2.33
- Value
- $29,773
Porter Derrell
Director
SaleAlert
- Shares
- 6,460
- Price
- $2.35
- Value
- $15,149
Fountain Nathan B
Director
SaleAlert
- Shares
- 6,400
- Price
- $2.23
- Value
- $14,273
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 2,090
- Price
- $3.26
- Value
- $6,813
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 9,406
- Price
- $3.01
- Value
- $28,311
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 2,671
- Price
- $3.00
- Value
- $8,017
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 15,085
- Price
- $3.00
- Value
- $45,263
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 5,633
- Price
- $1.90
- Value
- $10,718
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 8,548
- Price
- $1.71
- Value
- $14,658
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 5,200
- Price
- $1.76
- Value
- $9,169
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 30,092
- Price
- $1.82
- Value
- $54,867
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 10,070
- Price
- $1.99
- Value
- $20,035
Meisner Derek M
Chief Legal Officer & Corp Sec
Sale 10b5-1
- Shares
- 3,801
- Price
- $1.97
- Value
- $7,477
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Jun 17, 2026 | Porter Derrell Director | Sale | 13,040 | $2.33 | $30,318 | |
| Jun 16, 2026 | Porter Derrell Director | Sale | 12,800 | $2.33 | $29,773 | |
| Jun 15, 2026 | Porter Derrell Director | Sale | 6,460 | $2.35 | $15,149 | |
| Jun 09, 2026 | Fountain Nathan B Director | Sale | 6,400 | $2.23 | $14,273 | |
| Mar 06, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 2,090 | $3.26 | $6,813 | |
| Feb 27, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 9,406 | $3.01 | $28,311 | |
| Jan 28, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 2,671 | $3.00 | $8,017 | |
| Jan 26, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 15,085 | $3.00 | $45,263 | |
| Jan 23, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 5,633 | $1.90 | $10,718 | |
| Jan 12, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 8,548 | $1.71 | $14,658 | |
| Jan 09, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 5,200 | $1.76 | $9,169 | |
| Jan 08, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 30,092 | $1.82 | $54,867 | |
| Jan 07, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 10,070 | $1.99 | $20,035 | |
| Jan 06, 2026 | Meisner Derek M Chief Legal Officer & Corp Sec | Sale | 3,801 | $1.97 | $7,477 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.