Pledge vs non-disposal undertaking: the difference
Pledge vs non-disposal undertaking is a distinction that used to decide how much of a promoter's borrowing the market could see. Both lock up shares against a loan. Only one puts the lender in a position to sell them, and until the quarter ending 30 June 2025 only one had a clearly visible line in the quarterly shareholding pattern. This page sets out how the two differ legally and how each reaches the public record. It is not investment advice.
Definition
A pledge
gives the lender a security interest marked against the shares in the depository system, exercisable by sale on default. A non-disposal undertaking is only a promise by the shareholder not to sell. SEBI's takeover code treats both as encumbrances requiring disclosure. Source: SEBI SAST Regulation 28(3).
Pledge vs non-disposal undertaking at a glance
| What to check | Pledge | Non-disposal undertaking |
|---|---|---|
| What the lender gets | Security interest over the shares | A contractual promise not to sell |
| Marked in the depository | Yes | No |
| Remedy on default | Sell the pledged shares, called invocation | Sue for breach of contract |
| Encumbrance under SAST Reg 28(3) | Yes | Yes, named since 29 July 2019 |
| Event disclosure to exchanges | Within 7 working days | Within 7 working days |
| Own shareholding pattern column | Yes | Yes, from the quarter ending 30 June 2025 |
What separates them legally
A pledge is a security interest. The promoter's shares are marked in favour of the lender in the depository system, and if the loan defaults the lender can invoke the pledge and sell them. That sale moves promoter holding without the promoter deciding to sell, which is why the pledged figure has always drawn attention.
A non-disposal undertaking creates no security interest. The shares stay unmarked and with the promoter, who undertakes not to dispose of them while the facility is outstanding. If the promoter breaks that undertaking, the lender has a contractual claim. It has no direct path to the shares themselves.
The practical consequence for a reader is that the two carry different mechanics of risk. A pledge can convert into selling pressure through invocation. An NDU restricts what the promoter can do, and its failure becomes a dispute rather than a share sale.
Why both now count as an encumbrance
Until 2019 the definition in Regulation 28(3) of the SEBI (Substantial Acquisition of Shares and Takeovers) Regulations, 2011 read simply "a pledge, lien or any such transaction, by whatever name called". Lending structures were built around it, including undertakings and covenants over group company shares, which left real restrictions undisclosed.
The SAST (Second Amendment) Regulations, 2019, dated 29 July 2019, substituted the definition so that encumbrance includes any restriction on the free and marketable title to shares by whatever name called, whether direct or indirect; pledge, lien, negative lien, non-disposal undertaking; and any covenant, transaction, condition or arrangement in the nature of encumbrance. After that amendment the disclosure duty is the same for both instruments.
29 July 2019
Date SEBI substituted the SAST encumbrance definition to name the negative lien and non-disposal undertaking
Source: SEBI (SAST) (Second Amendment) Regulations, 2019
How each reaches the public record
Both follow the same two routes.
Event disclosure. Regulation 31 of the SAST Regulations requires a promoter to disclose the creation, invocation or release of an encumbrance to every exchange where the company is listed, within seven working days. Many of these arrive through system driven disclosures, which is why a pledge and its release can appear in the announcement feed without a separate company statement.
Quarterly pattern. SEBI circular SEBI/HO/CFD/CFD-PoD-2/P/CIR/2025/35 dated 20 March 2025 revised the shareholding pattern format so that Tables I to IV disclose the non-disposal undertaking, other encumbrances if any, and the total number of shares pledged or otherwise encumbered including NDU. Table I carries them as separate columns with a total encumbered column that sums pledged, NDU and other encumbrances. It came into force with effect from the quarter ending 30 June 2025.
What this changes when comparing quarters
Two cautions follow from the timing.
First, the pledge column is no longer the encumbrance number. A promoter can report nil pledged shares while a meaningful slice of the holding is under an undertaking. Reading the pledge line alone understates the lock-up, and the total encumbered column is the figure to place next to the promoter stake.
Second, a jump in disclosed encumbrance around the June 2025 quarter may be a format change, not a new borrowing. If NDU shares existed before that quarter, the revised format is the first time they surfaced as their own line in the pattern, even though the promoter's event disclosures under Regulation 31 would already have reported them. Checking the SAST disclosures for the same promoter separates a genuine new encumbrance from better presentation of an old one.
The individual instruments are covered in what is promoter pledging and what is a non-disposal undertaking, and the format they now share in how to read a shareholding pattern. Once you know which promoter holdings are encumbered, how to check promoter pledging covers the retrieval.
On pledge vs non-disposal undertaking, the disclosure duty is now identical and the reporting is now separate, so both are checkable against primary filings. Flock reports public filings with every claim sourced and dated. What any of it means for your money is your call to make.
Frequently asked questions
What is the difference between a pledge and a non-disposal undertaking?
A pledge marks the shares in the lender's favour in the depository system and lets the lender sell them on default. A non-disposal undertaking is only a contractual promise not to sell, leaving the lender with a claim for breach rather than a direct route to the shares. Source: SEBI SAST Regulations, 2011.
Are both a pledge and an NDU encumbrances under SEBI rules?
Yes. Regulation 28(3) of the SAST Regulations, 2011, as substituted on 29 July 2019, includes pledge, lien, negative lien and non-disposal undertaking within encumbrance, along with any restriction on free and marketable title and any arrangement in the nature of an encumbrance. Both carry the same disclosure duty. Source: SEBI.
Are pledged shares and NDU shares reported separately?
Yes, since the quarter ending 30 June 2025. The revised shareholding pattern format shows pledged shares, non-disposal undertaking and other encumbrances in separate columns, with a total encumbered column adding the three. Before that quarter the pledge figure was the visible number. Source: SEBI circular SEBI/HO/CFD/CFD-PoD-2/P/CIR/2025/35, 20 March 2025.
Which number should be read alongside promoter holding?
The total encumbered figure, because it captures pledge, NDU and other encumbrances together. A promoter can show nil pledged shares while a substantial part of the holding is locked by undertaking, which the pledge column alone would not reveal. Source: SEBI shareholding pattern format.
Flock tracks these filings, sourced, dated, and linked back to the original. See what smart-money entities disclosed, without the guesswork about what it means.
Disclosures shown are public regulatory filings. Data may be delayed or incomplete. Smart-money entities may no longer hold positions shown. Not investment advice.