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Insider profile

G. Walmsley Graham Insider Trading

This page tracks every SEC Form 4 filing since April 2023 by G. Walmsley Graham: 44 transactions in total, including 18 open-market purchases and 5 sales. Each record is parsed directly from the original filing, with amendments reconciled so a corrected filing never double-counts.

CIK
0001777517
Companies traded
2
Total filings
44
First filing
2022-09-19
Last filing
2026-06-18

Files as Graham G. Walmsley · SEC EDGAR ↗

Activity summary

The most recent open-market decision was a purchase of 50,000 shares ($2.2M) on March 27, 2025.

Three year balance

Buy and sell value by quarter, Q3 23 to Q2 26. G. Walmsley Graham has been a net seller across the period shown.

PurchasesSales
Q3 23Q4 23Q1 24$34.9MQ2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $34.9M.

Insider insight

G. Walmsley Graham trades most actively in AKRO, accounting for 13 of the 44 filings on record. The largest single open-market purchase on record is $10.4M in AKRO, filed Sep 2022.

Track record

$52.5M
Total purchased
$39.6M
Total sold
23
18 buys · 5 sales
Net buyer
Overall direction

Most active in

AKRO13 buysOLMA5 buys · 5 sales

Avg buy vs sell price

OLMA$11.87→$13.23+11.4%

Average prices across open-market transactions in this dataset.

Largest trade: $10.4M in AKRO (Sep 2022) in last 44Filing history: Sep 2022 – Jun 2026Under a 10b5-1 plan: 0%Full history: 44 filings

Transaction History

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValueReturn
Jun 18, 2026G. Walmsley GrahamOLMA
Award
29,500——+11.5% 1m
Dec 9, 2025G. Walmsley GrahamAKRO
Disposition
9,398——Pending
Dec 9, 2025G. Walmsley GrahamAKRO
Disposition
1,200,000——Pending
Dec 9, 2025G. Walmsley GrahamAKRO
Disposition
93,000——Pending
Dec 9, 2025G. Walmsley GrahamAKRO
Disposition
15,000——Pending

39 more transactions hidden

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Companies traded

By number of filings.

AKRO13 filings
OLMA10 filings

Filing cadence

Filings per quarter, this window.

2.8filings / quarter, Q3 22–Q2 26

Busiest: Q4 25 (14 filings)

Quietest: Q4 22 (0 filings)

Reading an insider's Form 4 history

Corporate insiders (directors, officers, and holders of more than 10% of a company's stock) must report their trades to the SEC on Form 4 within two business days. Looking at one insider's filings over time shows whether they tend to buy on the open market (a discretionary use of their own money, generally the strongest signal), sell, or simply receive and exercise equity awards as compensation.

The track record above measures how this insider's past open-market purchases performed in the months after each filing. Trades made under a pre-scheduled Rule 10b5-1 plan are flagged because they carry no timing signal. To pull any insider's full history programmatically, see the insider trading API or our guide to reading Form 4 filings.

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Form4API, StockholmNot affiliated with the SEC or EDGAR. Data sourced from public EDGAR filings. Not investment advice.

Scorecard

0%
Buys positive after 3m
-13.9%
Avg return at 3m
-10.8%
Median return at 3m
5
Scored buys
Best buy: OLMA-10.8% 3m (Dec 2023)Worst buy: OLMA-26.2% 3m (Dec 2024)

Absolute post-filing return, not market-adjusted · min. 5 matured open-market buys

See top insiders by track record →

Related insiders

Other insiders filing on AKRO.

Andrew ChengPresident and CEOJonathan YoungChief Operating OfficerCatriona YaleChief Development Officer