Bylund James 4

4 · REPLIGEN CORP · Filed Mar 23, 2026

AI-generated summary of this filing

Updated Mar 23, 2026

Repligen (RGEN) COO James Bylund Receives Equity Awards

What Happened

James Bylund, Chief Operating Officer of Repligen Corporation (RGEN), received equity awards on March 5, 2026: 7,751 restricted stock units (RSUs) and 8,315 derivative awards (stock options). Both grants were reported at $0.00 (no cash paid at grant).
The 7,751 RSUs each convert into one share when settled and vest in equal annual instalments over three years beginning on the first anniversary of the grant. The 8,315 derivative awards vest in thirds — one third becoming exercisable on March 5 of 2027, 2028 and 2029. The RSUs are settled only by delivering shares, per the filing.

Key Details

Transaction date: March 5, 2026; Filing date (Form 4): March 23, 2026 (appears late versus the usual 2-business-day SEC window).
Reported price: $0.00 for both grants; reported monetary value = $0.
Shares owned after transaction: not specified in the provided excerpt of the filing.
Footnotes: F1 explains the 7,751 awards are RSUs that settle in shares and vest over three years; F2 notes the option-style awards vest one third each year on March 5 of 2027–2029.
Transaction code: A (award/grant). No sale, purchase, or exercise occurred.

Context

These are compensation awards, not open-market purchases or sales. Awards like RSUs and vesting options are routine executive compensation and do not by themselves indicate immediate buying or selling of shares.
For the derivative awards, vesting is scheduled in future years; there is no evidence in this filing that options were exercised or shares sold.

Form 4

Period: 2026-03-05

Chief Operating Officer

Transactions

Award
Common Stock
[F1]
2026-03-05+7,751→ 25,423 total
Award
Stock Option (Right to Buy)
[F2]
2026-03-05+8,315→ 8,315 total
Exercise: $141.91Exp: 2036-03-05→ Common Stock (8,315 underlying)

Footnotes (2)

[F1]Mr. Bylund was awarded 7,751 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest in equal annual instalments over a three-year period beginning on the first anniversary of the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.
[F2]One third of the stock options will vest and become exercisable annually on March 5, 2027, March 5, 2028, and March 5, 2029.

Signature

/s/ Jennifer Carmichael (Attorney in Fact)|2026-03-23

1 file